Home / 140,649.48-210,908.61-81,502.07

Finding the Fourth Proportional to 140,649.48, 210,908.61 and 81,502.07

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Solution

The fourth proportional to 140,649.48, 210,908.61 and 81,502.07 is: 122,215.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,649.48 : 210,908.61 = 81,502.07 : x
  2. Step 2: Convert to fraction form
    140,649.48/210,908.61 = 81,502.07/x
  3. Step 3: Cross multiply
    140,649.48x = 210,908.61 × 81,502.07
  4. Step 4: Simplify right side
    140,649.48x = 17,189,487,241.28
  5. Step 5: Solve for x
    x = 17,189,487,241.28/140,649.48
  6. Step 6: Final answer
    x = 122,215.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.