Home / 112,146.19-154,759.78-61,159.31

Finding the Fourth Proportional to 112,146.19, 154,759.78 and 61,159.31

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Solution

The fourth proportional to 112,146.19, 154,759.78 and 61,159.31 is: 84,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,146.19 : 154,759.78 = 61,159.31 : x
  2. Step 2: Convert to fraction form
    112,146.19/154,759.78 = 61,159.31/x
  3. Step 3: Cross multiply
    112,146.19x = 154,759.78 × 61,159.31
  4. Step 4: Simplify right side
    112,146.19x = 9,465,001,360.55
  5. Step 5: Solve for x
    x = 9,465,001,360.55/112,146.19
  6. Step 6: Final answer
    x = 84,398.78

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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.