Home / 100,330.04-138,455.46-55,618.04

Finding the Fourth Proportional to 100,330.04, 138,455.46 and 55,618.04

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Solution

The fourth proportional to 100,330.04, 138,455.46 and 55,618.04 is: 76,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,330.04 : 138,455.46 = 55,618.04 : x
  2. Step 2: Convert to fraction form
    100,330.04/138,455.46 = 55,618.04/x
  3. Step 3: Cross multiply
    100,330.04x = 138,455.46 × 55,618.04
  4. Step 4: Simplify right side
    100,330.04x = 7,700,621,312.50
  5. Step 5: Solve for x
    x = 7,700,621,312.50/100,330.04
  6. Step 6: Final answer
    x = 76,752.90

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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.