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Finding the Fourth Proportional to 153,751.40, 212,177.23 and 85,766.60

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Solution

The fourth proportional to 153,751.40, 212,177.23 and 85,766.60 is: 118,358.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,751.40 : 212,177.23 = 85,766.60 : x
  2. Step 2: Convert to fraction form
    153,751.40/212,177.23 = 85,766.60/x
  3. Step 3: Cross multiply
    153,751.40x = 212,177.23 × 85,766.60
  4. Step 4: Simplify right side
    153,751.40x = 18,197,719,614.52
  5. Step 5: Solve for x
    x = 18,197,719,614.52/153,751.40
  6. Step 6: Final answer
    x = 118,358.08

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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.