Home / 115,040.12-172,474.11-77,494.82

Finding the Fourth Proportional to 115,040.12, 172,474.11 and 77,494.82

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Solution

The fourth proportional to 115,040.12, 172,474.11 and 77,494.82 is: 116,184.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,040.12 : 172,474.11 = 77,494.82 : x
  2. Step 2: Convert to fraction form
    115,040.12/172,474.11 = 77,494.82/x
  3. Step 3: Cross multiply
    115,040.12x = 172,474.11 × 77,494.82
  4. Step 4: Simplify right side
    115,040.12x = 13,365,849,246.74
  5. Step 5: Solve for x
    x = 13,365,849,246.74/115,040.12
  6. Step 6: Final answer
    x = 116,184.25

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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.