Home / 107,780.10-148,725.34-66,380.52

Finding the Fourth Proportional to 107,780.10, 148,725.34 and 66,380.52

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Solution

The fourth proportional to 107,780.10, 148,725.34 and 66,380.52 is: 91,598.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,780.10 : 148,725.34 = 66,380.52 : x
  2. Step 2: Convert to fraction form
    107,780.10/148,725.34 = 66,380.52/x
  3. Step 3: Cross multiply
    107,780.10x = 148,725.34 × 66,380.52
  4. Step 4: Simplify right side
    107,780.10x = 9,872,465,406.38
  5. Step 5: Solve for x
    x = 9,872,465,406.38/107,780.10
  6. Step 6: Final answer
    x = 91,598.22

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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.