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Finding the Fourth Proportional to 133,061.68, 183,620.52 and 79,319

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Solution

The fourth proportional to 133,061.68, 183,620.52 and 79,319 is: 109,457.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,061.68 : 183,620.52 = 79,319 : x
  2. Step 2: Convert to fraction form
    133,061.68/183,620.52 = 79,319/x
  3. Step 3: Cross multiply
    133,061.68x = 183,620.52 × 79,319
  4. Step 4: Simplify right side
    133,061.68x = 14,564,596,025.88
  5. Step 5: Solve for x
    x = 14,564,596,025.88/133,061.68
  6. Step 6: Final answer
    x = 109,457.48

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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.