Home / 115,278.12-159,080.60-64,292.40

Finding the Fourth Proportional to 115,278.12, 159,080.60 and 64,292.40

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Solution

The fourth proportional to 115,278.12, 159,080.60 and 64,292.40 is: 88,721.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,278.12 : 159,080.60 = 64,292.40 : x
  2. Step 2: Convert to fraction form
    115,278.12/159,080.60 = 64,292.40/x
  3. Step 3: Cross multiply
    115,278.12x = 159,080.60 × 64,292.40
  4. Step 4: Simplify right side
    115,278.12x = 10,227,673,567.44
  5. Step 5: Solve for x
    x = 10,227,673,567.44/115,278.12
  6. Step 6: Final answer
    x = 88,721.72

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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.