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Finding the Fourth Proportional to 156,841.71, 235,130.30 and 68,028.32

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Solution

The fourth proportional to 156,841.71, 235,130.30 and 68,028.32 is: 101,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,841.71 : 235,130.30 = 68,028.32 : x
  2. Step 2: Convert to fraction form
    156,841.71/235,130.30 = 68,028.32/x
  3. Step 3: Cross multiply
    156,841.71x = 235,130.30 × 68,028.32
  4. Step 4: Simplify right side
    156,841.71x = 15,995,519,290.10
  5. Step 5: Solve for x
    x = 15,995,519,290.10/156,841.71
  6. Step 6: Final answer
    x = 101,985.11

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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.