Home / 113,143.11-156,120.14-65,387.24

Finding the Fourth Proportional to 113,143.11, 156,120.14 and 65,387.24

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Solution

The fourth proportional to 113,143.11, 156,120.14 and 65,387.24 is: 90,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,143.11 : 156,120.14 = 65,387.24 : x
  2. Step 2: Convert to fraction form
    113,143.11/156,120.14 = 65,387.24/x
  3. Step 3: Cross multiply
    113,143.11x = 156,120.14 × 65,387.24
  4. Step 4: Simplify right side
    113,143.11x = 10,208,263,955.48
  5. Step 5: Solve for x
    x = 10,208,263,955.48/113,143.11
  6. Step 6: Final answer
    x = 90,224.35

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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.