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Finding the Fourth Proportional to 91,505.60, 137,258.40 and 88,006.40

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Solution

The fourth proportional to 91,505.60, 137,258.40 and 88,006.40 is: 132,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,505.60 : 137,258.40 = 88,006.40 : x
  2. Step 2: Convert to fraction form
    91,505.60/137,258.40 = 88,006.40/x
  3. Step 3: Cross multiply
    91,505.60x = 137,258.40 × 88,006.40
  4. Step 4: Simplify right side
    91,505.60x = 12,079,617,653.76
  5. Step 5: Solve for x
    x = 12,079,617,653.76/91,505.60
  6. Step 6: Final answer
    x = 132,009.60

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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.