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Finding the Fourth Proportional to 131,033.76, 180,831.60 and 71,417.76

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Solution

The fourth proportional to 131,033.76, 180,831.60 and 71,417.76 is: 98,559.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,033.76 : 180,831.60 = 71,417.76 : x
  2. Step 2: Convert to fraction form
    131,033.76/180,831.60 = 71,417.76/x
  3. Step 3: Cross multiply
    131,033.76x = 180,831.60 × 71,417.76
  4. Step 4: Simplify right side
    131,033.76x = 12,914,587,809.22
  5. Step 5: Solve for x
    x = 12,914,587,809.22/131,033.76
  6. Step 6: Final answer
    x = 98,559.24

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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.