Home / 131,831.65-181,928.15-71,402.14

Finding the Fourth Proportional to 131,831.65, 181,928.15 and 71,402.14

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Solution

The fourth proportional to 131,831.65, 181,928.15 and 71,402.14 is: 98,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,831.65 : 181,928.15 = 71,402.14 : x
  2. Step 2: Convert to fraction form
    131,831.65/181,928.15 = 71,402.14/x
  3. Step 3: Cross multiply
    131,831.65x = 181,928.15 × 71,402.14
  4. Step 4: Simplify right side
    131,831.65x = 12,990,059,236.24
  5. Step 5: Solve for x
    x = 12,990,059,236.24/131,831.65
  6. Step 6: Final answer
    x = 98,535.21

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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.