Home / 99,819.95-137,774.52-65,834.51

Finding the Fourth Proportional to 99,819.95, 137,774.52 and 65,834.51

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Solution

The fourth proportional to 99,819.95, 137,774.52 and 65,834.51 is: 90,866.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,819.95 : 137,774.52 = 65,834.51 : x
  2. Step 2: Convert to fraction form
    99,819.95/137,774.52 = 65,834.51/x
  3. Step 3: Cross multiply
    99,819.95x = 137,774.52 × 65,834.51
  4. Step 4: Simplify right side
    99,819.95x = 9,070,317,325.81
  5. Step 5: Solve for x
    x = 9,070,317,325.81/99,819.95
  6. Step 6: Final answer
    x = 90,866.78

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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.