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Finding the Fourth Proportional to 153,625.59, 212,004.21 and 85,646.84

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Solution

The fourth proportional to 153,625.59, 212,004.21 and 85,646.84 is: 118,193.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,625.59 : 212,004.21 = 85,646.84 : x
  2. Step 2: Convert to fraction form
    153,625.59/212,004.21 = 85,646.84/x
  3. Step 3: Cross multiply
    153,625.59x = 212,004.21 × 85,646.84
  4. Step 4: Simplify right side
    153,625.59x = 18,157,489,593.18
  5. Step 5: Solve for x
    x = 18,157,489,593.18/153,625.59
  6. Step 6: Final answer
    x = 118,193.13

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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.