Home / 155,981.53-215,254.55-88,012.91

Finding the Fourth Proportional to 155,981.53, 215,254.55 and 88,012.91

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Solution

The fourth proportional to 155,981.53, 215,254.55 and 88,012.91 is: 121,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,981.53 : 215,254.55 = 88,012.91 : x
  2. Step 2: Convert to fraction form
    155,981.53/215,254.55 = 88,012.91/x
  3. Step 3: Cross multiply
    155,981.53x = 215,254.55 × 88,012.91
  4. Step 4: Simplify right side
    155,981.53x = 18,945,179,336.24
  5. Step 5: Solve for x
    x = 18,945,179,336.24/155,981.53
  6. Step 6: Final answer
    x = 121,457.84

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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.