Home / 131,017.40-180,803.11-74,428.76

Finding the Fourth Proportional to 131,017.40, 180,803.11 and 74,428.76

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Solution

The fourth proportional to 131,017.40, 180,803.11 and 74,428.76 is: 102,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,017.40 : 180,803.11 = 74,428.76 : x
  2. Step 2: Convert to fraction form
    131,017.40/180,803.11 = 74,428.76/x
  3. Step 3: Cross multiply
    131,017.40x = 180,803.11 × 74,428.76
  4. Step 4: Simplify right side
    131,017.40x = 13,456,951,281.44
  5. Step 5: Solve for x
    x = 13,456,951,281.44/131,017.40
  6. Step 6: Final answer
    x = 102,711.18

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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.