Home / 99,111.57-136,774.95-53,789.95

Finding the Fourth Proportional to 99,111.57, 136,774.95 and 53,789.95

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Solution

The fourth proportional to 99,111.57, 136,774.95 and 53,789.95 is: 74,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,111.57 : 136,774.95 = 53,789.95 : x
  2. Step 2: Convert to fraction form
    99,111.57/136,774.95 = 53,789.95/x
  3. Step 3: Cross multiply
    99,111.57x = 136,774.95 × 53,789.95
  4. Step 4: Simplify right side
    99,111.57x = 7,357,117,721.75
  5. Step 5: Solve for x
    x = 7,357,117,721.75/99,111.57
  6. Step 6: Final answer
    x = 74,230.66

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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.