Home / 138,941.04-191,738.16-75,278.88

Finding the Fourth Proportional to 138,941.04, 191,738.16 and 75,278.88

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Solution

The fourth proportional to 138,941.04, 191,738.16 and 75,278.88 is: 103,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,941.04 : 191,738.16 = 75,278.88 : x
  2. Step 2: Convert to fraction form
    138,941.04/191,738.16 = 75,278.88/x
  3. Step 3: Cross multiply
    138,941.04x = 191,738.16 × 75,278.88
  4. Step 4: Simplify right side
    138,941.04x = 14,433,833,938.06
  5. Step 5: Solve for x
    x = 14,433,833,938.06/138,941.04
  6. Step 6: Final answer
    x = 103,884.60

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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.