Home / 138,649.94-191,337.03-74,987.66

Finding the Fourth Proportional to 138,649.94, 191,337.03 and 74,987.66

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Solution

The fourth proportional to 138,649.94, 191,337.03 and 74,987.66 is: 103,483.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,649.94 : 191,337.03 = 74,987.66 : x
  2. Step 2: Convert to fraction form
    138,649.94/191,337.03 = 74,987.66/x
  3. Step 3: Cross multiply
    138,649.94x = 191,337.03 × 74,987.66
  4. Step 4: Simplify right side
    138,649.94x = 14,347,916,151.05
  5. Step 5: Solve for x
    x = 14,347,916,151.05/138,649.94
  6. Step 6: Final answer
    x = 103,483.03

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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.