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Finding the Fourth Proportional to 156,693.90, 234,943.65 and 90,101.10

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Solution

The fourth proportional to 156,693.90, 234,943.65 and 90,101.10 is: 135,095.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,693.90 : 234,943.65 = 90,101.10 : x
  2. Step 2: Convert to fraction form
    156,693.90/234,943.65 = 90,101.10/x
  3. Step 3: Cross multiply
    156,693.90x = 234,943.65 × 90,101.10
  4. Step 4: Simplify right side
    156,693.90x = 21,168,681,303.02
  5. Step 5: Solve for x
    x = 21,168,681,303.02/156,693.90
  6. Step 6: Final answer
    x = 135,095.76

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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.