Home / 153,165.11-211,336.62-89,490.60

Finding the Fourth Proportional to 153,165.11, 211,336.62 and 89,490.60

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Solution

The fourth proportional to 153,165.11, 211,336.62 and 89,490.60 is: 123,478.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,165.11 : 211,336.62 = 89,490.60 : x
  2. Step 2: Convert to fraction form
    153,165.11/211,336.62 = 89,490.60/x
  3. Step 3: Cross multiply
    153,165.11x = 211,336.62 × 89,490.60
  4. Step 4: Simplify right side
    153,165.11x = 18,912,640,925.77
  5. Step 5: Solve for x
    x = 18,912,640,925.77/153,165.11
  6. Step 6: Final answer
    x = 123,478.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.