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Finding the Fourth Proportional to 75,000.90, 112,501.35 and 68,877.30

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Solution

The fourth proportional to 75,000.90, 112,501.35 and 68,877.30 is: 103,315.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,000.90 : 112,501.35 = 68,877.30 : x
  2. Step 2: Convert to fraction form
    75,000.90/112,501.35 = 68,877.30/x
  3. Step 3: Cross multiply
    75,000.90x = 112,501.35 × 68,877.30
  4. Step 4: Simplify right side
    75,000.90x = 7,748,789,234.36
  5. Step 5: Solve for x
    x = 7,748,789,234.36/75,000.90
  6. Step 6: Final answer
    x = 103,315.95

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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.