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Finding the Fourth Proportional to 130,137, 179,589.33 and 70,521

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Solution

The fourth proportional to 130,137, 179,589.33 and 70,521 is: 97,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,137 : 179,589.33 = 70,521 : x
  2. Step 2: Convert to fraction form
    130,137/179,589.33 = 70,521/x
  3. Step 3: Cross multiply
    130,137x = 179,589.33 × 70,521
  4. Step 4: Simplify right side
    130,137x = 12,664,819,140.93
  5. Step 5: Solve for x
    x = 12,664,819,140.93/130,137
  6. Step 6: Final answer
    x = 97,319.13

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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.