Home / 98,930.72-136,531.10-55,895.30

Finding the Fourth Proportional to 98,930.72, 136,531.10 and 55,895.30

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Solution

The fourth proportional to 98,930.72, 136,531.10 and 55,895.30 is: 77,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,930.72 : 136,531.10 = 55,895.30 : x
  2. Step 2: Convert to fraction form
    98,930.72/136,531.10 = 55,895.30/x
  3. Step 3: Cross multiply
    98,930.72x = 136,531.10 × 55,895.30
  4. Step 4: Simplify right side
    98,930.72x = 7,631,446,793.83
  5. Step 5: Solve for x
    x = 7,631,446,793.83/98,930.72
  6. Step 6: Final answer
    x = 77,139.30

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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.