Home / 99,483.62-137,338.12-76,771.58

Finding the Fourth Proportional to 99,483.62, 137,338.12 and 76,771.58

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Solution

The fourth proportional to 99,483.62, 137,338.12 and 76,771.58 is: 105,983.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,483.62 : 137,338.12 = 76,771.58 : x
  2. Step 2: Convert to fraction form
    99,483.62/137,338.12 = 76,771.58/x
  3. Step 3: Cross multiply
    99,483.62x = 137,338.12 × 76,771.58
  4. Step 4: Simplify right side
    99,483.62x = 10,543,664,466.63
  5. Step 5: Solve for x
    x = 10,543,664,466.63/99,483.62
  6. Step 6: Final answer
    x = 105,983.92

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1.5x scale

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.