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Finding the Fourth Proportional to 110,140.80, 151,972.50 and 64,820.70

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Solution

The fourth proportional to 110,140.80, 151,972.50 and 64,820.70 is: 89,439.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,140.80 : 151,972.50 = 64,820.70 : x
  2. Step 2: Convert to fraction form
    110,140.80/151,972.50 = 64,820.70/x
  3. Step 3: Cross multiply
    110,140.80x = 151,972.50 × 64,820.70
  4. Step 4: Simplify right side
    110,140.80x = 9,850,963,830.75
  5. Step 5: Solve for x
    x = 9,850,963,830.75/110,140.80
  6. Step 6: Final answer
    x = 89,439.73

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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.