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Finding the Fourth Proportional to 91,443.80, 137,165.70 and 56,269.40

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Solution

The fourth proportional to 91,443.80, 137,165.70 and 56,269.40 is: 84,404.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,443.80 : 137,165.70 = 56,269.40 : x
  2. Step 2: Convert to fraction form
    91,443.80/137,165.70 = 56,269.40/x
  3. Step 3: Cross multiply
    91,443.80x = 137,165.70 × 56,269.40
  4. Step 4: Simplify right side
    91,443.80x = 7,718,231,639.58
  5. Step 5: Solve for x
    x = 7,718,231,639.58/91,443.80
  6. Step 6: Final answer
    x = 84,404.10

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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.