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Finding the Fourth Proportional to 88,909.30, 133,363.95 and 82,429.30

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Solution

The fourth proportional to 88,909.30, 133,363.95 and 82,429.30 is: 123,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,909.30 : 133,363.95 = 82,429.30 : x
  2. Step 2: Convert to fraction form
    88,909.30/133,363.95 = 82,429.30/x
  3. Step 3: Cross multiply
    88,909.30x = 133,363.95 × 82,429.30
  4. Step 4: Simplify right side
    88,909.30x = 10,993,097,043.74
  5. Step 5: Solve for x
    x = 10,993,097,043.74/88,909.30
  6. Step 6: Final answer
    x = 123,643.95

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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.