Home / 149,045.86-205,712.49-85,426.30

Finding the Fourth Proportional to 149,045.86, 205,712.49 and 85,426.30

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Solution

The fourth proportional to 149,045.86, 205,712.49 and 85,426.30 is: 117,905.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,045.86 : 205,712.49 = 85,426.30 : x
  2. Step 2: Convert to fraction form
    149,045.86/205,712.49 = 85,426.30/x
  3. Step 3: Cross multiply
    149,045.86x = 205,712.49 × 85,426.30
  4. Step 4: Simplify right side
    149,045.86x = 17,573,256,884.49
  5. Step 5: Solve for x
    x = 17,573,256,884.49/149,045.86
  6. Step 6: Final answer
    x = 117,905.03

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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.