Home / 130,113.68-179,569.32-79,122.56

Finding the Fourth Proportional to 130,113.68, 179,569.32 and 79,122.56

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Solution

The fourth proportional to 130,113.68, 179,569.32 and 79,122.56 is: 109,196.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,113.68 : 179,569.32 = 79,122.56 : x
  2. Step 2: Convert to fraction form
    130,113.68/179,569.32 = 79,122.56/x
  3. Step 3: Cross multiply
    130,113.68x = 179,569.32 × 79,122.56
  4. Step 4: Simplify right side
    130,113.68x = 14,207,984,295.86
  5. Step 5: Solve for x
    x = 14,207,984,295.86/130,113.68
  6. Step 6: Final answer
    x = 109,196.70

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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.