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Finding the Fourth Proportional to 91,509.60, 137,264.40 and 88,010.40

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Solution

The fourth proportional to 91,509.60, 137,264.40 and 88,010.40 is: 132,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,509.60 : 137,264.40 = 88,010.40 : x
  2. Step 2: Convert to fraction form
    91,509.60/137,264.40 = 88,010.40/x
  3. Step 3: Cross multiply
    91,509.60x = 137,264.40 × 88,010.40
  4. Step 4: Simplify right side
    91,509.60x = 12,080,694,749.76
  5. Step 5: Solve for x
    x = 12,080,694,749.76/91,509.60
  6. Step 6: Final answer
    x = 132,015.60

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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.