Home / 107,658.90-161,419.23-45,312.66

Finding the Fourth Proportional to 107,658.90, 161,419.23 and 45,312.66

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Solution

The fourth proportional to 107,658.90, 161,419.23 and 45,312.66 is: 67,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,658.90 : 161,419.23 = 45,312.66 : x
  2. Step 2: Convert to fraction form
    107,658.90/161,419.23 = 45,312.66/x
  3. Step 3: Cross multiply
    107,658.90x = 161,419.23 × 45,312.66
  4. Step 4: Simplify right side
    107,658.90x = 7,314,334,686.45
  5. Step 5: Solve for x
    x = 7,314,334,686.45/107,658.90
  6. Step 6: Final answer
    x = 67,939.90

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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.