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Finding the Fourth Proportional to 153,818.88, 212,270.10 and 84,908.39

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Solution

The fourth proportional to 153,818.88, 212,270.10 and 84,908.39 is: 117,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,818.88 : 212,270.10 = 84,908.39 : x
  2. Step 2: Convert to fraction form
    153,818.88/212,270.10 = 84,908.39/x
  3. Step 3: Cross multiply
    153,818.88x = 212,270.10 × 84,908.39
  4. Step 4: Simplify right side
    153,818.88x = 18,023,511,637.53
  5. Step 5: Solve for x
    x = 18,023,511,637.53/153,818.88
  6. Step 6: Final answer
    x = 117,173.60

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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.