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Finding the Fourth Proportional to 109,641.40, 151,305.12 and 59,340.40

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Solution

The fourth proportional to 109,641.40, 151,305.12 and 59,340.40 is: 81,889.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,641.40 : 151,305.12 = 59,340.40 : x
  2. Step 2: Convert to fraction form
    109,641.40/151,305.12 = 59,340.40/x
  3. Step 3: Cross multiply
    109,641.40x = 151,305.12 × 59,340.40
  4. Step 4: Simplify right side
    109,641.40x = 8,978,506,342.85
  5. Step 5: Solve for x
    x = 8,978,506,342.85/109,641.40
  6. Step 6: Final answer
    x = 81,889.75

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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.