Home / 89,931.70-134,811.15-69,930.10

Finding the Fourth Proportional to 89,931.70, 134,811.15 and 69,930.10

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Solution

The fourth proportional to 89,931.70, 134,811.15 and 69,930.10 is: 104,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,931.70 : 134,811.15 = 69,930.10 : x
  2. Step 2: Convert to fraction form
    89,931.70/134,811.15 = 69,930.10/x
  3. Step 3: Cross multiply
    89,931.70x = 134,811.15 × 69,930.10
  4. Step 4: Simplify right side
    89,931.70x = 9,427,357,200.62
  5. Step 5: Solve for x
    x = 9,427,357,200.62/89,931.70
  6. Step 6: Final answer
    x = 104,827.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.