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Finding the Fourth Proportional to 128,070.26, 176,747.54 and 70,715.27

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Solution

The fourth proportional to 128,070.26, 176,747.54 and 70,715.27 is: 97,592.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,070.26 : 176,747.54 = 70,715.27 : x
  2. Step 2: Convert to fraction form
    128,070.26/176,747.54 = 70,715.27/x
  3. Step 3: Cross multiply
    128,070.26x = 176,747.54 × 70,715.27
  4. Step 4: Simplify right side
    128,070.26x = 12,498,750,101.23
  5. Step 5: Solve for x
    x = 12,498,750,101.23/128,070.26
  6. Step 6: Final answer
    x = 97,592.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.