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Finding the Fourth Proportional to 151,455.55, 209,000.53 and 83,458.98

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Solution

The fourth proportional to 151,455.55, 209,000.53 and 83,458.98 is: 115,168.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,455.55 : 209,000.53 = 83,458.98 : x
  2. Step 2: Convert to fraction form
    151,455.55/209,000.53 = 83,458.98/x
  3. Step 3: Cross multiply
    151,455.55x = 209,000.53 × 83,458.98
  4. Step 4: Simplify right side
    151,455.55x = 17,442,970,844.61
  5. Step 5: Solve for x
    x = 17,442,970,844.61/151,455.55
  6. Step 6: Final answer
    x = 115,168.91

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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.