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Finding the Fourth Proportional to 158,437.64, 218,644.81 and 85,841.71

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Solution

The fourth proportional to 158,437.64, 218,644.81 and 85,841.71 is: 118,462.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,437.64 : 218,644.81 = 85,841.71 : x
  2. Step 2: Convert to fraction form
    158,437.64/218,644.81 = 85,841.71/x
  3. Step 3: Cross multiply
    158,437.64x = 218,644.81 × 85,841.71
  4. Step 4: Simplify right side
    158,437.64x = 18,768,845,648.52
  5. Step 5: Solve for x
    x = 18,768,845,648.52/158,437.64
  6. Step 6: Final answer
    x = 118,462.04

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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.