Home / 100,084.56-138,116.16-54,761.76

Finding the Fourth Proportional to 100,084.56, 138,116.16 and 54,761.76

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Solution

The fourth proportional to 100,084.56, 138,116.16 and 54,761.76 is: 75,570.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,084.56 : 138,116.16 = 54,761.76 : x
  2. Step 2: Convert to fraction form
    100,084.56/138,116.16 = 54,761.76/x
  3. Step 3: Cross multiply
    100,084.56x = 138,116.16 × 54,761.76
  4. Step 4: Simplify right side
    100,084.56x = 7,563,484,006.04
  5. Step 5: Solve for x
    x = 7,563,484,006.04/100,084.56
  6. Step 6: Final answer
    x = 75,570.94

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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.