Home / 156,728.36-234,778.78-89,981.16

Finding the Fourth Proportional to 156,728.36, 234,778.78 and 89,981.16

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Solution

The fourth proportional to 156,728.36, 234,778.78 and 89,981.16 is: 134,791.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,728.36 : 234,778.78 = 89,981.16 : x
  2. Step 2: Convert to fraction form
    156,728.36/234,778.78 = 89,981.16/x
  3. Step 3: Cross multiply
    156,728.36x = 234,778.78 × 89,981.16
  4. Step 4: Simplify right side
    156,728.36x = 21,125,666,967.78
  5. Step 5: Solve for x
    x = 21,125,666,967.78/156,728.36
  6. Step 6: Final answer
    x = 134,791.60

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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.