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Finding the Fourth Proportional to 109,699.76, 151,385.80 and 59,398.76

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Solution

The fourth proportional to 109,699.76, 151,385.80 and 59,398.76 is: 81,970.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,699.76 : 151,385.80 = 59,398.76 : x
  2. Step 2: Convert to fraction form
    109,699.76/151,385.80 = 59,398.76/x
  3. Step 3: Cross multiply
    109,699.76x = 151,385.80 × 59,398.76
  4. Step 4: Simplify right side
    109,699.76x = 8,992,128,801.61
  5. Step 5: Solve for x
    x = 8,992,128,801.61/109,699.76
  6. Step 6: Final answer
    x = 81,970.36

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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.