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Finding the Fourth Proportional to 159,386.06, 219,952.77 and 87,765.91

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Solution

The fourth proportional to 159,386.06, 219,952.77 and 87,765.91 is: 121,116.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,386.06 : 219,952.77 = 87,765.91 : x
  2. Step 2: Convert to fraction form
    159,386.06/219,952.77 = 87,765.91/x
  3. Step 3: Cross multiply
    159,386.06x = 219,952.77 × 87,765.91
  4. Step 4: Simplify right side
    159,386.06x = 19,304,355,374.30
  5. Step 5: Solve for x
    x = 19,304,355,374.30/159,386.06
  6. Step 6: Final answer
    x = 121,116.96

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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.