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Finding the Fourth Proportional to 113,463.68, 156,795.68 and 85,120.16

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Solution

The fourth proportional to 113,463.68, 156,795.68 and 85,120.16 is: 117,627.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,463.68 : 156,795.68 = 85,120.16 : x
  2. Step 2: Convert to fraction form
    113,463.68/156,795.68 = 85,120.16/x
  3. Step 3: Cross multiply
    113,463.68x = 156,795.68 × 85,120.16
  4. Step 4: Simplify right side
    113,463.68x = 13,346,473,368.91
  5. Step 5: Solve for x
    x = 13,346,473,368.91/113,463.68
  6. Step 6: Final answer
    x = 117,627.71

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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.