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Finding the Fourth Proportional to 112,545, 155,312.10 and 62,251.56

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Solution

The fourth proportional to 112,545, 155,312.10 and 62,251.56 is: 85,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,545 : 155,312.10 = 62,251.56 : x
  2. Step 2: Convert to fraction form
    112,545/155,312.10 = 62,251.56/x
  3. Step 3: Cross multiply
    112,545x = 155,312.10 × 62,251.56
  4. Step 4: Simplify right side
    112,545x = 9,668,420,511.88
  5. Step 5: Solve for x
    x = 9,668,420,511.88/112,545
  6. Step 6: Final answer
    x = 85,907.15

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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.