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Finding the Fourth Proportional to 130,174, 179,640.24 and 70,558

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Solution

The fourth proportional to 130,174, 179,640.24 and 70,558 is: 97,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,174 : 179,640.24 = 70,558 : x
  2. Step 2: Convert to fraction form
    130,174/179,640.24 = 70,558/x
  3. Step 3: Cross multiply
    130,174x = 179,640.24 × 70,558
  4. Step 4: Simplify right side
    130,174x = 12,675,056,053.92
  5. Step 5: Solve for x
    x = 12,675,056,053.92/130,174
  6. Step 6: Final answer
    x = 97,370.11

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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.