Home / 150,047.19-207,140.31-115,978.68

Finding the Fourth Proportional to 150,047.19, 207,140.31 and 115,978.68

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Solution

The fourth proportional to 150,047.19, 207,140.31 and 115,978.68 is: 160,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,047.19 : 207,140.31 = 115,978.68 : x
  2. Step 2: Convert to fraction form
    150,047.19/207,140.31 = 115,978.68/x
  3. Step 3: Cross multiply
    150,047.19x = 207,140.31 × 115,978.68
  4. Step 4: Simplify right side
    150,047.19x = 24,023,859,728.59
  5. Step 5: Solve for x
    x = 24,023,859,728.59/150,047.19
  6. Step 6: Final answer
    x = 160,108.69

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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.