Home / 115,240.32-172,627.20-90,046.08

Finding the Fourth Proportional to 115,240.32, 172,627.20 and 90,046.08

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Solution

The fourth proportional to 115,240.32, 172,627.20 and 90,046.08 is: 134,886.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,240.32 : 172,627.20 = 90,046.08 : x
  2. Step 2: Convert to fraction form
    115,240.32/172,627.20 = 90,046.08/x
  3. Step 3: Cross multiply
    115,240.32x = 172,627.20 × 90,046.08
  4. Step 4: Simplify right side
    115,240.32x = 15,544,402,661.38
  5. Step 5: Solve for x
    x = 15,544,402,661.38/115,240.32
  6. Step 6: Final answer
    x = 134,886.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.