Home / 129,813.15-179,142.23-71,669.93

Finding the Fourth Proportional to 129,813.15, 179,142.23 and 71,669.93

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Solution

The fourth proportional to 129,813.15, 179,142.23 and 71,669.93 is: 98,904.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,813.15 : 179,142.23 = 71,669.93 : x
  2. Step 2: Convert to fraction form
    129,813.15/179,142.23 = 71,669.93/x
  3. Step 3: Cross multiply
    129,813.15x = 179,142.23 × 71,669.93
  4. Step 4: Simplify right side
    129,813.15x = 12,839,111,084.14
  5. Step 5: Solve for x
    x = 12,839,111,084.14/129,813.15
  6. Step 6: Final answer
    x = 98,904.55

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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.