Home / 129,948.19-179,330.70-72,592.54

Finding the Fourth Proportional to 129,948.19, 179,330.70 and 72,592.54

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Solution

The fourth proportional to 129,948.19, 179,330.70 and 72,592.54 is: 100,178.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,948.19 : 179,330.70 = 72,592.54 : x
  2. Step 2: Convert to fraction form
    129,948.19/179,330.70 = 72,592.54/x
  3. Step 3: Cross multiply
    129,948.19x = 179,330.70 × 72,592.54
  4. Step 4: Simplify right side
    129,948.19x = 13,018,071,012.98
  5. Step 5: Solve for x
    x = 13,018,071,012.98/129,948.19
  6. Step 6: Final answer
    x = 100,178.93

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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.