Home / 157,729.62-236,397.52-78,866.40

Finding the Fourth Proportional to 157,729.62, 236,397.52 and 78,866.40

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Solution

The fourth proportional to 157,729.62, 236,397.52 and 78,866.40 is: 118,201.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,729.62 : 236,397.52 = 78,866.40 : x
  2. Step 2: Convert to fraction form
    157,729.62/236,397.52 = 78,866.40/x
  3. Step 3: Cross multiply
    157,729.62x = 236,397.52 × 78,866.40
  4. Step 4: Simplify right side
    157,729.62x = 18,643,821,371.33
  5. Step 5: Solve for x
    x = 18,643,821,371.33/157,729.62
  6. Step 6: Final answer
    x = 118,201.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.