Home / 129,641.46-179,054.18-86,545.92

Finding the Fourth Proportional to 129,641.46, 179,054.18 and 86,545.92

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Solution

The fourth proportional to 129,641.46, 179,054.18 and 86,545.92 is: 119,532.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,641.46 : 179,054.18 = 86,545.92 : x
  2. Step 2: Convert to fraction form
    129,641.46/179,054.18 = 86,545.92/x
  3. Step 3: Cross multiply
    129,641.46x = 179,054.18 × 86,545.92
  4. Step 4: Simplify right side
    129,641.46x = 15,496,408,954.31
  5. Step 5: Solve for x
    x = 15,496,408,954.31/129,641.46
  6. Step 6: Final answer
    x = 119,532.82

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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.