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Finding the Fourth Proportional to 91,564.80, 137,116.80 and 60,230.40

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Solution

The fourth proportional to 91,564.80, 137,116.80 and 60,230.40 is: 90,194.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,564.80 : 137,116.80 = 60,230.40 : x
  2. Step 2: Convert to fraction form
    91,564.80/137,116.80 = 60,230.40/x
  3. Step 3: Cross multiply
    91,564.80x = 137,116.80 × 60,230.40
  4. Step 4: Simplify right side
    91,564.80x = 8,258,599,710.72
  5. Step 5: Solve for x
    x = 8,258,599,710.72/91,564.80
  6. Step 6: Final answer
    x = 90,194.05

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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.