Home / 158,531.52-218,772.08-86,910.24

Finding the Fourth Proportional to 158,531.52, 218,772.08 and 86,910.24

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Solution

The fourth proportional to 158,531.52, 218,772.08 and 86,910.24 is: 119,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,531.52 : 218,772.08 = 86,910.24 : x
  2. Step 2: Convert to fraction form
    158,531.52/218,772.08 = 86,910.24/x
  3. Step 3: Cross multiply
    158,531.52x = 218,772.08 × 86,910.24
  4. Step 4: Simplify right side
    158,531.52x = 19,013,533,978.10
  5. Step 5: Solve for x
    x = 19,013,533,978.10/158,531.52
  6. Step 6: Final answer
    x = 119,935.35

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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.