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Finding the Fourth Proportional to 84,854.60, 127,281.90 and 71,732.60

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Solution

The fourth proportional to 84,854.60, 127,281.90 and 71,732.60 is: 107,598.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,854.60 : 127,281.90 = 71,732.60 : x
  2. Step 2: Convert to fraction form
    84,854.60/127,281.90 = 71,732.60/x
  3. Step 3: Cross multiply
    84,854.60x = 127,281.90 × 71,732.60
  4. Step 4: Simplify right side
    84,854.60x = 9,130,261,619.94
  5. Step 5: Solve for x
    x = 9,130,261,619.94/84,854.60
  6. Step 6: Final answer
    x = 107,598.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.