Home / 125,967.15-173,821.77-77,561.40

Finding the Fourth Proportional to 125,967.15, 173,821.77 and 77,561.40

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Solution

The fourth proportional to 125,967.15, 173,821.77 and 77,561.40 is: 107,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,967.15 : 173,821.77 = 77,561.40 : x
  2. Step 2: Convert to fraction form
    125,967.15/173,821.77 = 77,561.40/x
  3. Step 3: Cross multiply
    125,967.15x = 173,821.77 × 77,561.40
  4. Step 4: Simplify right side
    125,967.15x = 13,481,859,831.68
  5. Step 5: Solve for x
    x = 13,481,859,831.68/125,967.15
  6. Step 6: Final answer
    x = 107,026.79

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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.