Home / 131,831.52-181,926.56-71,400.76

Finding the Fourth Proportional to 131,831.52, 181,926.56 and 71,400.76

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Solution

The fourth proportional to 131,831.52, 181,926.56 and 71,400.76 is: 98,532.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,831.52 : 181,926.56 = 71,400.76 : x
  2. Step 2: Convert to fraction form
    131,831.52/181,926.56 = 71,400.76/x
  3. Step 3: Cross multiply
    131,831.52x = 181,926.56 × 71,400.76
  4. Step 4: Simplify right side
    131,831.52x = 12,989,694,648.19
  5. Step 5: Solve for x
    x = 12,989,694,648.19/131,831.52
  6. Step 6: Final answer
    x = 98,532.54

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1.5x scale

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.