Home / 315,079.90-472,677.45-128,110.30

Finding the Fourth Proportional to 315,079.90, 472,677.45 and 128,110.30

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Solution

The fourth proportional to 315,079.90, 472,677.45 and 128,110.30 is: 192,188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,079.90 : 472,677.45 = 128,110.30 : x
  2. Step 2: Convert to fraction form
    315,079.90/472,677.45 = 128,110.30/x
  3. Step 3: Cross multiply
    315,079.90x = 472,677.45 × 128,110.30
  4. Step 4: Simplify right side
    315,079.90x = 60,554,849,922.74
  5. Step 5: Solve for x
    x = 60,554,849,922.74/315,079.90
  6. Step 6: Final answer
    x = 192,188.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.