Home / 129,860.63-179,210.46-71,717.18

Finding the Fourth Proportional to 129,860.63, 179,210.46 and 71,717.18

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Solution

The fourth proportional to 129,860.63, 179,210.46 and 71,717.18 is: 98,971.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,860.63 : 179,210.46 = 71,717.18 : x
  2. Step 2: Convert to fraction form
    129,860.63/179,210.46 = 71,717.18/x
  3. Step 3: Cross multiply
    129,860.63x = 179,210.46 × 71,717.18
  4. Step 4: Simplify right side
    129,860.63x = 12,852,468,190.59
  5. Step 5: Solve for x
    x = 12,852,468,190.59/129,860.63
  6. Step 6: Final answer
    x = 98,971.25

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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.