Home / 113,147.20-156,168.84-74,908.18

Finding the Fourth Proportional to 113,147.20, 156,168.84 and 74,908.18

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Solution

The fourth proportional to 113,147.20, 156,168.84 and 74,908.18 is: 103,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,147.20 : 156,168.84 = 74,908.18 : x
  2. Step 2: Convert to fraction form
    113,147.20/156,168.84 = 74,908.18/x
  3. Step 3: Cross multiply
    113,147.20x = 156,168.84 × 74,908.18
  4. Step 4: Simplify right side
    113,147.20x = 11,698,323,577.11
  5. Step 5: Solve for x
    x = 11,698,323,577.11/113,147.20
  6. Step 6: Final answer
    x = 103,390.31

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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.