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Finding the Fourth Proportional to 136,031.68, 187,746 and 113,334.68

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Solution

The fourth proportional to 136,031.68, 187,746 and 113,334.68 is: 156,420.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,031.68 : 187,746 = 113,334.68 : x
  2. Step 2: Convert to fraction form
    136,031.68/187,746 = 113,334.68/x
  3. Step 3: Cross multiply
    136,031.68x = 187,746 × 113,334.68
  4. Step 4: Simplify right side
    136,031.68x = 21,278,132,831.28
  5. Step 5: Solve for x
    x = 21,278,132,831.28/136,031.68
  6. Step 6: Final answer
    x = 156,420.42

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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.