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Finding the Fourth Proportional to 156,696.90, 234,948.15 and 90,104.10

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Solution

The fourth proportional to 156,696.90, 234,948.15 and 90,104.10 is: 135,100.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,696.90 : 234,948.15 = 90,104.10 : x
  2. Step 2: Convert to fraction form
    156,696.90/234,948.15 = 90,104.10/x
  3. Step 3: Cross multiply
    156,696.90x = 234,948.15 × 90,104.10
  4. Step 4: Simplify right side
    156,696.90x = 21,169,791,602.42
  5. Step 5: Solve for x
    x = 21,169,791,602.42/156,696.90
  6. Step 6: Final answer
    x = 135,100.26

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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.