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Finding the Fourth Proportional to 156,843.71, 235,133.30 and 68,030.32

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Solution

The fourth proportional to 156,843.71, 235,133.30 and 68,030.32 is: 101,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,843.71 : 235,133.30 = 68,030.32 : x
  2. Step 2: Convert to fraction form
    156,843.71/235,133.30 = 68,030.32/x
  3. Step 3: Cross multiply
    156,843.71x = 235,133.30 × 68,030.32
  4. Step 4: Simplify right side
    156,843.71x = 15,996,193,641.66
  5. Step 5: Solve for x
    x = 15,996,193,641.66/156,843.71
  6. Step 6: Final answer
    x = 101,988.11

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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.