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Finding the Fourth Proportional to 156,820.80, 235,252.80 and 68,071.80

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Solution

The fourth proportional to 156,820.80, 235,252.80 and 68,071.80 is: 102,117.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,820.80 : 235,252.80 = 68,071.80 : x
  2. Step 2: Convert to fraction form
    156,820.80/235,252.80 = 68,071.80/x
  3. Step 3: Cross multiply
    156,820.80x = 235,252.80 × 68,071.80
  4. Step 4: Simplify right side
    156,820.80x = 16,014,081,551.04
  5. Step 5: Solve for x
    x = 16,014,081,551.04/156,820.80
  6. Step 6: Final answer
    x = 102,117.08

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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.