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Finding the Fourth Proportional to 88,693.60, 133,040.40 and 87,235.60

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Solution

The fourth proportional to 88,693.60, 133,040.40 and 87,235.60 is: 130,853.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,693.60 : 133,040.40 = 87,235.60 : x
  2. Step 2: Convert to fraction form
    88,693.60/133,040.40 = 87,235.60/x
  3. Step 3: Cross multiply
    88,693.60x = 133,040.40 × 87,235.60
  4. Step 4: Simplify right side
    88,693.60x = 11,605,859,118.24
  5. Step 5: Solve for x
    x = 11,605,859,118.24/88,693.60
  6. Step 6: Final answer
    x = 130,853.40

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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.