Home / 125,490.87-173,176.90-71,775.81

Finding the Fourth Proportional to 125,490.87, 173,176.90 and 71,775.81

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Solution

The fourth proportional to 125,490.87, 173,176.90 and 71,775.81 is: 99,050.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,490.87 : 173,176.90 = 71,775.81 : x
  2. Step 2: Convert to fraction form
    125,490.87/173,176.90 = 71,775.81/x
  3. Step 3: Cross multiply
    125,490.87x = 173,176.90 × 71,775.81
  4. Step 4: Simplify right side
    125,490.87x = 12,429,912,270.79
  5. Step 5: Solve for x
    x = 12,429,912,270.79/125,490.87
  6. Step 6: Final answer
    x = 99,050.33

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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.