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Finding the Fourth Proportional to 115,654.76, 159,630.30 and 75,298.34

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Solution

The fourth proportional to 115,654.76, 159,630.30 and 75,298.34 is: 103,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,654.76 : 159,630.30 = 75,298.34 : x
  2. Step 2: Convert to fraction form
    115,654.76/159,630.30 = 75,298.34/x
  3. Step 3: Cross multiply
    115,654.76x = 159,630.30 × 75,298.34
  4. Step 4: Simplify right side
    115,654.76x = 12,019,896,603.70
  5. Step 5: Solve for x
    x = 12,019,896,603.70/115,654.76
  6. Step 6: Final answer
    x = 103,929.11

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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.