Home / 130,943.28-180,702.96-74,355.84

Finding the Fourth Proportional to 130,943.28, 180,702.96 and 74,355.84

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Solution

The fourth proportional to 130,943.28, 180,702.96 and 74,355.84 is: 102,611.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,943.28 : 180,702.96 = 74,355.84 : x
  2. Step 2: Convert to fraction form
    130,943.28/180,702.96 = 74,355.84/x
  3. Step 3: Cross multiply
    130,943.28x = 180,702.96 × 74,355.84
  4. Step 4: Simplify right side
    130,943.28x = 13,436,320,381.29
  5. Step 5: Solve for x
    x = 13,436,320,381.29/130,943.28
  6. Step 6: Final answer
    x = 102,611.76

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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.