Home / 130,727.28-180,402.48-74,139.06

Finding the Fourth Proportional to 130,727.28, 180,402.48 and 74,139.06

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Solution

The fourth proportional to 130,727.28, 180,402.48 and 74,139.06 is: 102,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,727.28 : 180,402.48 = 74,139.06 : x
  2. Step 2: Convert to fraction form
    130,727.28/180,402.48 = 74,139.06/x
  3. Step 3: Cross multiply
    130,727.28x = 180,402.48 × 74,139.06
  4. Step 4: Simplify right side
    130,727.28x = 13,374,870,288.87
  5. Step 5: Solve for x
    x = 13,374,870,288.87/130,727.28
  6. Step 6: Final answer
    x = 102,311.24

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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.