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Finding the Fourth Proportional to 153,292.63, 211,553.76 and 85,309.39

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Solution

The fourth proportional to 153,292.63, 211,553.76 and 85,309.39 is: 117,732.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,292.63 : 211,553.76 = 85,309.39 : x
  2. Step 2: Convert to fraction form
    153,292.63/211,553.76 = 85,309.39/x
  3. Step 3: Cross multiply
    153,292.63x = 211,553.76 × 85,309.39
  4. Step 4: Simplify right side
    153,292.63x = 18,047,522,384.70
  5. Step 5: Solve for x
    x = 18,047,522,384.70/153,292.63
  6. Step 6: Final answer
    x = 117,732.49

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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.