Home / 129,941.90-179,317.88-72,582.02

Finding the Fourth Proportional to 129,941.90, 179,317.88 and 72,582.02

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Solution

The fourth proportional to 129,941.90, 179,317.88 and 72,582.02 is: 100,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,941.90 : 179,317.88 = 72,582.02 : x
  2. Step 2: Convert to fraction form
    129,941.90/179,317.88 = 72,582.02/x
  3. Step 3: Cross multiply
    129,941.90x = 179,317.88 × 72,582.02
  4. Step 4: Simplify right side
    129,941.90x = 13,015,253,055.93
  5. Step 5: Solve for x
    x = 13,015,253,055.93/129,941.90
  6. Step 6: Final answer
    x = 100,162.10

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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.