Home / 113,153.28-156,023.52-72,263.66

Finding the Fourth Proportional to 113,153.28, 156,023.52 and 72,263.66

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Solution

The fourth proportional to 113,153.28, 156,023.52 and 72,263.66 is: 99,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,153.28 : 156,023.52 = 72,263.66 : x
  2. Step 2: Convert to fraction form
    113,153.28/156,023.52 = 72,263.66/x
  3. Step 3: Cross multiply
    113,153.28x = 156,023.52 × 72,263.66
  4. Step 4: Simplify right side
    113,153.28x = 11,274,830,601.28
  5. Step 5: Solve for x
    x = 11,274,830,601.28/113,153.28
  6. Step 6: Final answer
    x = 99,642.10

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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.