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Finding the Fourth Proportional to 129,910.50, 179,276.49 and 70,294.50

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Solution

The fourth proportional to 129,910.50, 179,276.49 and 70,294.50 is: 97,006.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,910.50 : 179,276.49 = 70,294.50 : x
  2. Step 2: Convert to fraction form
    129,910.50/179,276.49 = 70,294.50/x
  3. Step 3: Cross multiply
    129,910.50x = 179,276.49 × 70,294.50
  4. Step 4: Simplify right side
    129,910.50x = 12,602,151,226.31
  5. Step 5: Solve for x
    x = 12,602,151,226.31/129,910.50
  6. Step 6: Final answer
    x = 97,006.41

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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.