Home / 91,324.51-136,987.13-28,144.15

Finding the Fourth Proportional to 91,324.51, 136,987.13 and 28,144.15

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Solution

The fourth proportional to 91,324.51, 136,987.13 and 28,144.15 is: 42,216.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,324.51 : 136,987.13 = 28,144.15 : x
  2. Step 2: Convert to fraction form
    91,324.51/136,987.13 = 28,144.15/x
  3. Step 3: Cross multiply
    91,324.51x = 136,987.13 × 28,144.15
  4. Step 4: Simplify right side
    91,324.51x = 3,855,386,334.79
  5. Step 5: Solve for x
    x = 3,855,386,334.79/91,324.51
  6. Step 6: Final answer
    x = 42,216.34

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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.