Home / 107,115.26-147,813.32-61,790.55

Finding the Fourth Proportional to 107,115.26, 147,813.32 and 61,790.55

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Solution

The fourth proportional to 107,115.26, 147,813.32 and 61,790.55 is: 85,267.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,115.26 : 147,813.32 = 61,790.55 : x
  2. Step 2: Convert to fraction form
    107,115.26/147,813.32 = 61,790.55/x
  3. Step 3: Cross multiply
    107,115.26x = 147,813.32 × 61,790.55
  4. Step 4: Simplify right side
    107,115.26x = 9,133,466,031.17
  5. Step 5: Solve for x
    x = 9,133,466,031.17/107,115.26
  6. Step 6: Final answer
    x = 85,267.65

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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.