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Finding the Fourth Proportional to 153,855.63, 212,306.37 and 89,307.73

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Solution

The fourth proportional to 153,855.63, 212,306.37 and 89,307.73 is: 123,236.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,855.63 : 212,306.37 = 89,307.73 : x
  2. Step 2: Convert to fraction form
    153,855.63/212,306.37 = 89,307.73/x
  3. Step 3: Cross multiply
    153,855.63x = 212,306.37 × 89,307.73
  4. Step 4: Simplify right side
    153,855.63x = 18,960,599,969.24
  5. Step 5: Solve for x
    x = 18,960,599,969.24/153,855.63
  6. Step 6: Final answer
    x = 123,236.31

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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.