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Finding the Fourth Proportional to 78,889.30, 118,333.95 and 75,001.30

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Solution

The fourth proportional to 78,889.30, 118,333.95 and 75,001.30 is: 112,501.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889.30 : 118,333.95 = 75,001.30 : x
  2. Step 2: Convert to fraction form
    78,889.30/118,333.95 = 75,001.30/x
  3. Step 3: Cross multiply
    78,889.30x = 118,333.95 × 75,001.30
  4. Step 4: Simplify right side
    78,889.30x = 8,875,200,084.14
  5. Step 5: Solve for x
    x = 8,875,200,084.14/78,889.30
  6. Step 6: Final answer
    x = 112,501.95

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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.