Home / 345,532.64-518,114.28-108,811.76

Finding the Fourth Proportional to 345,532.64, 518,114.28 and 108,811.76

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Solution

The fourth proportional to 345,532.64, 518,114.28 and 108,811.76 is: 163,159.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,532.64 : 518,114.28 = 108,811.76 : x
  2. Step 2: Convert to fraction form
    345,532.64/518,114.28 = 108,811.76/x
  3. Step 3: Cross multiply
    345,532.64x = 518,114.28 × 108,811.76
  4. Step 4: Simplify right side
    345,532.64x = 56,376,926,687.93
  5. Step 5: Solve for x
    x = 56,376,926,687.93/345,532.64
  6. Step 6: Final answer
    x = 163,159.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.