Home / 156,987.30-216,631.17-89,005.62

Finding the Fourth Proportional to 156,987.30, 216,631.17 and 89,005.62

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Solution

The fourth proportional to 156,987.30, 216,631.17 and 89,005.62 is: 122,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987.30 : 216,631.17 = 89,005.62 : x
  2. Step 2: Convert to fraction form
    156,987.30/216,631.17 = 89,005.62/x
  3. Step 3: Cross multiply
    156,987.30x = 216,631.17 × 89,005.62
  4. Step 4: Simplify right side
    156,987.30x = 19,281,391,597.18
  5. Step 5: Solve for x
    x = 19,281,391,597.18/156,987.30
  6. Step 6: Final answer
    x = 122,821.35

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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.