Home / 138,722.16-191,435.22-75,058.56

Finding the Fourth Proportional to 138,722.16, 191,435.22 and 75,058.56

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Solution

The fourth proportional to 138,722.16, 191,435.22 and 75,058.56 is: 103,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,722.16 : 191,435.22 = 75,058.56 : x
  2. Step 2: Convert to fraction form
    138,722.16/191,435.22 = 75,058.56/x
  3. Step 3: Cross multiply
    138,722.16x = 191,435.22 × 75,058.56
  4. Step 4: Simplify right side
    138,722.16x = 14,368,851,946.48
  5. Step 5: Solve for x
    x = 14,368,851,946.48/138,722.16
  6. Step 6: Final answer
    x = 103,580.08

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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.