Home / 129,154.98-178,236.02-71,014.17

Finding the Fourth Proportional to 129,154.98, 178,236.02 and 71,014.17

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Solution

The fourth proportional to 129,154.98, 178,236.02 and 71,014.17 is: 98,000.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,154.98 : 178,236.02 = 71,014.17 : x
  2. Step 2: Convert to fraction form
    129,154.98/178,236.02 = 71,014.17/x
  3. Step 3: Cross multiply
    129,154.98x = 178,236.02 × 71,014.17
  4. Step 4: Simplify right side
    129,154.98x = 12,657,282,669.33
  5. Step 5: Solve for x
    x = 12,657,282,669.33/129,154.98
  6. Step 6: Final answer
    x = 98,000.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.