Home / 130,565.01-180,177.89-72,419.97

Finding the Fourth Proportional to 130,565.01, 180,177.89 and 72,419.97

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Solution

The fourth proportional to 130,565.01, 180,177.89 and 72,419.97 is: 99,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,565.01 : 180,177.89 = 72,419.97 : x
  2. Step 2: Convert to fraction form
    130,565.01/180,177.89 = 72,419.97/x
  3. Step 3: Cross multiply
    130,565.01x = 180,177.89 × 72,419.97
  4. Step 4: Simplify right side
    130,565.01x = 13,048,477,388.46
  5. Step 5: Solve for x
    x = 13,048,477,388.46/130,565.01
  6. Step 6: Final answer
    x = 99,938.55

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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.