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Finding the Fourth Proportional to 156,737.42, 216,363.84 and 105,819.12

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Solution

The fourth proportional to 156,737.42, 216,363.84 and 105,819.12 is: 146,075.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,737.42 : 216,363.84 = 105,819.12 : x
  2. Step 2: Convert to fraction form
    156,737.42/216,363.84 = 105,819.12/x
  3. Step 3: Cross multiply
    156,737.42x = 216,363.84 × 105,819.12
  4. Step 4: Simplify right side
    156,737.42x = 22,895,431,148.62
  5. Step 5: Solve for x
    x = 22,895,431,148.62/156,737.42
  6. Step 6: Final answer
    x = 146,075.08

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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.