Home / 98,857.02-136,422.72-54,145.02

Finding the Fourth Proportional to 98,857.02, 136,422.72 and 54,145.02

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Solution

The fourth proportional to 98,857.02, 136,422.72 and 54,145.02 is: 74,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,857.02 : 136,422.72 = 54,145.02 : x
  2. Step 2: Convert to fraction form
    98,857.02/136,422.72 = 54,145.02/x
  3. Step 3: Cross multiply
    98,857.02x = 136,422.72 × 54,145.02
  4. Step 4: Simplify right side
    98,857.02x = 7,386,610,902.85
  5. Step 5: Solve for x
    x = 7,386,610,902.85/98,857.02
  6. Step 6: Final answer
    x = 74,720.15

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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.