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Finding the Fourth Proportional to 130,052, 179,472.12 and 70,436

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Solution

The fourth proportional to 130,052, 179,472.12 and 70,436 is: 97,201.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,052 : 179,472.12 = 70,436 : x
  2. Step 2: Convert to fraction form
    130,052/179,472.12 = 70,436/x
  3. Step 3: Cross multiply
    130,052x = 179,472.12 × 70,436
  4. Step 4: Simplify right side
    130,052x = 12,641,298,244.32
  5. Step 5: Solve for x
    x = 12,641,298,244.32/130,052
  6. Step 6: Final answer
    x = 97,201.87

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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.