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Finding the Fourth Proportional to 88,918.40, 133,053.60 and 65,590.40

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Solution

The fourth proportional to 88,918.40, 133,053.60 and 65,590.40 is: 98,146.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,918.40 : 133,053.60 = 65,590.40 : x
  2. Step 2: Convert to fraction form
    88,918.40/133,053.60 = 65,590.40/x
  3. Step 3: Cross multiply
    88,918.40x = 133,053.60 × 65,590.40
  4. Step 4: Simplify right side
    88,918.40x = 8,727,038,845.44
  5. Step 5: Solve for x
    x = 8,727,038,845.44/88,918.40
  6. Step 6: Final answer
    x = 98,146.60

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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.