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Finding the Fourth Proportional to 145,767.76, 218,715.17 and 51,065.88

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Solution

The fourth proportional to 145,767.76, 218,715.17 and 51,065.88 is: 76,621.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,767.76 : 218,715.17 = 51,065.88 : x
  2. Step 2: Convert to fraction form
    145,767.76/218,715.17 = 51,065.88/x
  3. Step 3: Cross multiply
    145,767.76x = 218,715.17 × 51,065.88
  4. Step 4: Simplify right side
    145,767.76x = 11,168,881,932.88
  5. Step 5: Solve for x
    x = 11,168,881,932.88/145,767.76
  6. Step 6: Final answer
    x = 76,621.07

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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.