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Finding the Fourth Proportional to 109,454.50, 151,047.21 and 59,153.50

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Solution

The fourth proportional to 109,454.50, 151,047.21 and 59,153.50 is: 81,631.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,454.50 : 151,047.21 = 59,153.50 : x
  2. Step 2: Convert to fraction form
    109,454.50/151,047.21 = 59,153.50/x
  3. Step 3: Cross multiply
    109,454.50x = 151,047.21 × 59,153.50
  4. Step 4: Simplify right side
    109,454.50x = 8,934,971,136.74
  5. Step 5: Solve for x
    x = 8,934,971,136.74/109,454.50
  6. Step 6: Final answer
    x = 81,631.83

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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.