Home / 124,779.42-172,259.07-77,060.45

Finding the Fourth Proportional to 124,779.42, 172,259.07 and 77,060.45

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Solution

The fourth proportional to 124,779.42, 172,259.07 and 77,060.45 is: 106,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,779.42 : 172,259.07 = 77,060.45 : x
  2. Step 2: Convert to fraction form
    124,779.42/172,259.07 = 77,060.45/x
  3. Step 3: Cross multiply
    124,779.42x = 172,259.07 × 77,060.45
  4. Step 4: Simplify right side
    124,779.42x = 13,274,360,589.49
  5. Step 5: Solve for x
    x = 13,274,360,589.49/124,779.42
  6. Step 6: Final answer
    x = 106,382.61

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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.