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Finding the Fourth Proportional to 153,289.20, 211,543.20 and 92,847

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Solution

The fourth proportional to 153,289.20, 211,543.20 and 92,847 is: 128,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,289.20 : 211,543.20 = 92,847 : x
  2. Step 2: Convert to fraction form
    153,289.20/211,543.20 = 92,847/x
  3. Step 3: Cross multiply
    153,289.20x = 211,543.20 × 92,847
  4. Step 4: Simplify right side
    153,289.20x = 19,641,151,490.40
  5. Step 5: Solve for x
    x = 19,641,151,490.40/153,289.20
  6. Step 6: Final answer
    x = 128,131.35

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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.