Home / 129,943.65-179,320.29-72,583.77

Finding the Fourth Proportional to 129,943.65, 179,320.29 and 72,583.77

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Solution

The fourth proportional to 129,943.65, 179,320.29 and 72,583.77 is: 100,164.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,943.65 : 179,320.29 = 72,583.77 : x
  2. Step 2: Convert to fraction form
    129,943.65/179,320.29 = 72,583.77/x
  3. Step 3: Cross multiply
    129,943.65x = 179,320.29 × 72,583.77
  4. Step 4: Simplify right side
    129,943.65x = 13,015,742,685.69
  5. Step 5: Solve for x
    x = 13,015,742,685.69/129,943.65
  6. Step 6: Final answer
    x = 100,164.52

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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.