Home / 315,007.02-472,707.18-128,018.52

Finding the Fourth Proportional to 315,007.02, 472,707.18 and 128,018.52

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Solution

The fourth proportional to 315,007.02, 472,707.18 and 128,018.52 is: 192,107.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,007.02 : 472,707.18 = 128,018.52 : x
  2. Step 2: Convert to fraction form
    315,007.02/472,707.18 = 128,018.52/x
  3. Step 3: Cross multiply
    315,007.02x = 472,707.18 × 128,018.52
  4. Step 4: Simplify right side
    315,007.02x = 60,515,273,576.97
  5. Step 5: Solve for x
    x = 60,515,273,576.97/315,007.02
  6. Step 6: Final answer
    x = 192,107.70

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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.