Home / 137,938.28-190,309.04-77,500.56

Finding the Fourth Proportional to 137,938.28, 190,309.04 and 77,500.56

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Solution

The fourth proportional to 137,938.28, 190,309.04 and 77,500.56 is: 106,925.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,938.28 : 190,309.04 = 77,500.56 : x
  2. Step 2: Convert to fraction form
    137,938.28/190,309.04 = 77,500.56/x
  3. Step 3: Cross multiply
    137,938.28x = 190,309.04 × 77,500.56
  4. Step 4: Simplify right side
    137,938.28x = 14,749,057,173.06
  5. Step 5: Solve for x
    x = 14,749,057,173.06/137,938.28
  6. Step 6: Final answer
    x = 106,925.05

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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.