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Finding the Fourth Proportional to 162,666.78, 243,901.29 and 67,782.30

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Solution

The fourth proportional to 162,666.78, 243,901.29 and 67,782.30 is: 101,632.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,666.78 : 243,901.29 = 67,782.30 : x
  2. Step 2: Convert to fraction form
    162,666.78/243,901.29 = 67,782.30/x
  3. Step 3: Cross multiply
    162,666.78x = 243,901.29 × 67,782.30
  4. Step 4: Simplify right side
    162,666.78x = 16,532,190,409.17
  5. Step 5: Solve for x
    x = 16,532,190,409.17/162,666.78
  6. Step 6: Final answer
    x = 101,632.25

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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.