Home / 138,812.10-191,559.51-75,149.34

Finding the Fourth Proportional to 138,812.10, 191,559.51 and 75,149.34

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Solution

The fourth proportional to 138,812.10, 191,559.51 and 75,149.34 is: 103,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812.10 : 191,559.51 = 75,149.34 : x
  2. Step 2: Convert to fraction form
    138,812.10/191,559.51 = 75,149.34/x
  3. Step 3: Cross multiply
    138,812.10x = 191,559.51 × 75,149.34
  4. Step 4: Simplify right side
    138,812.10x = 14,395,570,747.22
  5. Step 5: Solve for x
    x = 14,395,570,747.22/138,812.10
  6. Step 6: Final answer
    x = 103,705.45

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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.