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Finding the Fourth Proportional to 153,677.98, 212,076.29 and 85,694.75

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Solution

The fourth proportional to 153,677.98, 212,076.29 and 85,694.75 is: 118,259.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,677.98 : 212,076.29 = 85,694.75 : x
  2. Step 2: Convert to fraction form
    153,677.98/212,076.29 = 85,694.75/x
  3. Step 3: Cross multiply
    153,677.98x = 212,076.29 × 85,694.75
  4. Step 4: Simplify right side
    153,677.98x = 18,173,824,484.15
  5. Step 5: Solve for x
    x = 18,173,824,484.15/153,677.98
  6. Step 6: Final answer
    x = 118,259.13

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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.