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Finding the Fourth Proportional to 153,309.07, 211,385.50 and 104,934.30

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Solution

The fourth proportional to 153,309.07, 211,385.50 and 104,934.30 is: 144,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,309.07 : 211,385.50 = 104,934.30 : x
  2. Step 2: Convert to fraction form
    153,309.07/211,385.50 = 104,934.30/x
  3. Step 3: Cross multiply
    153,309.07x = 211,385.50 × 104,934.30
  4. Step 4: Simplify right side
    153,309.07x = 22,181,589,472.65
  5. Step 5: Solve for x
    x = 22,181,589,472.65/153,309.07
  6. Step 6: Final answer
    x = 144,685.43

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1.5x scale

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.