Home / 148,891.42-205,386.99-91,490.86

Finding the Fourth Proportional to 148,891.42, 205,386.99 and 91,490.86

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Solution

The fourth proportional to 148,891.42, 205,386.99 and 91,490.86 is: 126,206.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,891.42 : 205,386.99 = 91,490.86 : x
  2. Step 2: Convert to fraction form
    148,891.42/205,386.99 = 91,490.86/x
  3. Step 3: Cross multiply
    148,891.42x = 205,386.99 × 91,490.86
  4. Step 4: Simplify right side
    148,891.42x = 18,791,032,347.91
  5. Step 5: Solve for x
    x = 18,791,032,347.91/148,891.42
  6. Step 6: Final answer
    x = 126,206.28

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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.