Home / 138,002.74-190,444.84-76,749.79

Finding the Fourth Proportional to 138,002.74, 190,444.84 and 76,749.79

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Solution

The fourth proportional to 138,002.74, 190,444.84 and 76,749.79 is: 105,915.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,002.74 : 190,444.84 = 76,749.79 : x
  2. Step 2: Convert to fraction form
    138,002.74/190,444.84 = 76,749.79/x
  3. Step 3: Cross multiply
    138,002.74x = 190,444.84 × 76,749.79
  4. Step 4: Simplify right side
    138,002.74x = 14,616,601,165.68
  5. Step 5: Solve for x
    x = 14,616,601,165.68/138,002.74
  6. Step 6: Final answer
    x = 105,915.29

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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.