Home / 315,010.02-472,711.68-128,021.52

Finding the Fourth Proportional to 315,010.02, 472,711.68 and 128,021.52

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Solution

The fourth proportional to 315,010.02, 472,711.68 and 128,021.52 is: 192,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,010.02 : 472,711.68 = 128,021.52 : x
  2. Step 2: Convert to fraction form
    315,010.02/472,711.68 = 128,021.52/x
  3. Step 3: Cross multiply
    315,010.02x = 472,711.68 × 128,021.52
  4. Step 4: Simplify right side
    315,010.02x = 60,517,267,795.35
  5. Step 5: Solve for x
    x = 60,517,267,795.35/315,010.02
  6. Step 6: Final answer
    x = 192,112.20

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1.5x scale

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.