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Finding the Fourth Proportional to 153,253.80, 211,491.27 and 85,273.62

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Solution

The fourth proportional to 153,253.80, 211,491.27 and 85,273.62 is: 117,678.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,253.80 : 211,491.27 = 85,273.62 : x
  2. Step 2: Convert to fraction form
    153,253.80/211,491.27 = 85,273.62/x
  3. Step 3: Cross multiply
    153,253.80x = 211,491.27 × 85,273.62
  4. Step 4: Simplify right side
    153,253.80x = 18,034,626,191.30
  5. Step 5: Solve for x
    x = 18,034,626,191.30/153,253.80
  6. Step 6: Final answer
    x = 117,678.17

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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.