Home / 129,953.52-179,281.62-87,438.24

Finding the Fourth Proportional to 129,953.52, 179,281.62 and 87,438.24

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Solution

The fourth proportional to 129,953.52, 179,281.62 and 87,438.24 is: 120,628.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,953.52 : 179,281.62 = 87,438.24 : x
  2. Step 2: Convert to fraction form
    129,953.52/179,281.62 = 87,438.24/x
  3. Step 3: Cross multiply
    129,953.52x = 179,281.62 × 87,438.24
  4. Step 4: Simplify right side
    129,953.52x = 15,676,069,317.15
  5. Step 5: Solve for x
    x = 15,676,069,317.15/129,953.52
  6. Step 6: Final answer
    x = 120,628.28

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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.