Home / 88,691.20-133,036.80-86,941.60

Finding the Fourth Proportional to 88,691.20, 133,036.80 and 86,941.60

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Solution

The fourth proportional to 88,691.20, 133,036.80 and 86,941.60 is: 130,412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,691.20 : 133,036.80 = 86,941.60 : x
  2. Step 2: Convert to fraction form
    88,691.20/133,036.80 = 86,941.60/x
  3. Step 3: Cross multiply
    88,691.20x = 133,036.80 × 86,941.60
  4. Step 4: Simplify right side
    88,691.20x = 11,566,432,250.88
  5. Step 5: Solve for x
    x = 11,566,432,250.88/88,691.20
  6. Step 6: Final answer
    x = 130,412.40

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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.