Home / 84,012,795-126,019,192.50-20,187,387

Finding the Fourth Proportional to 84,012,795, 126,019,192.50 and 20,187,387

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Solution

The fourth proportional to 84,012,795, 126,019,192.50 and 20,187,387 is: 30,281,080.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,012,795 : 126,019,192.50 = 20,187,387 : x
  2. Step 2: Convert to fraction form
    84,012,795/126,019,192.50 = 20,187,387/x
  3. Step 3: Cross multiply
    84,012,795x = 126,019,192.50 × 20,187,387
  4. Step 4: Simplify right side
    84,012,795x = 2,543,998,208,424,997.50
  5. Step 5: Solve for x
    x = 2,543,998,208,424,997.50/84,012,795
  6. Step 6: Final answer
    x = 30,281,080.50

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.