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Finding the Fourth Proportional to 98,862, 136,430.04 and 54,150

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Solution

The fourth proportional to 98,862, 136,430.04 and 54,150 is: 74,727.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,862 : 136,430.04 = 54,150 : x
  2. Step 2: Convert to fraction form
    98,862/136,430.04 = 54,150/x
  3. Step 3: Cross multiply
    98,862x = 136,430.04 × 54,150
  4. Step 4: Simplify right side
    98,862x = 7,387,686,666
  5. Step 5: Solve for x
    x = 7,387,686,666/98,862
  6. Step 6: Final answer
    x = 74,727.26

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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.