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Finding the Fourth Proportional to 112,399, 155,115.08 and 64,652.29

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Solution

The fourth proportional to 112,399, 155,115.08 and 64,652.29 is: 89,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,399 : 155,115.08 = 64,652.29 : x
  2. Step 2: Convert to fraction form
    112,399/155,115.08 = 64,652.29/x
  3. Step 3: Cross multiply
    112,399x = 155,115.08 × 64,652.29
  4. Step 4: Simplify right side
    112,399x = 10,028,544,812.27
  5. Step 5: Solve for x
    x = 10,028,544,812.27/112,399
  6. Step 6: Final answer
    x = 89,222.72

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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.