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Finding the Fourth Proportional to 130,187, 179,658.08 and 70,571

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Solution

The fourth proportional to 130,187, 179,658.08 and 70,571 is: 97,387.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,187 : 179,658.08 = 70,571 : x
  2. Step 2: Convert to fraction form
    130,187/179,658.08 = 70,571/x
  3. Step 3: Cross multiply
    130,187x = 179,658.08 × 70,571
  4. Step 4: Simplify right side
    130,187x = 12,678,650,363.68
  5. Step 5: Solve for x
    x = 12,678,650,363.68/130,187
  6. Step 6: Final answer
    x = 97,387.99

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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.