Home / 315,320.36-472,569.82-128,113

Finding the Fourth Proportional to 315,320.36, 472,569.82 and 128,113

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Solution

The fourth proportional to 315,320.36, 472,569.82 and 128,113 is: 192,002.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,320.36 : 472,569.82 = 128,113 : x
  2. Step 2: Convert to fraction form
    315,320.36/472,569.82 = 128,113/x
  3. Step 3: Cross multiply
    315,320.36x = 472,569.82 × 128,113
  4. Step 4: Simplify right side
    315,320.36x = 60,542,337,349.66
  5. Step 5: Solve for x
    x = 60,542,337,349.66/315,320.36
  6. Step 6: Final answer
    x = 192,002.63

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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.