Home / 138,327.74-190,980.56-112,894.86

Finding the Fourth Proportional to 138,327.74, 190,980.56 and 112,894.86

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Solution

The fourth proportional to 138,327.74, 190,980.56 and 112,894.86 is: 155,866.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,327.74 : 190,980.56 = 112,894.86 : x
  2. Step 2: Convert to fraction form
    138,327.74/190,980.56 = 112,894.86/x
  3. Step 3: Cross multiply
    138,327.74x = 190,980.56 × 112,894.86
  4. Step 4: Simplify right side
    138,327.74x = 21,560,723,019.45
  5. Step 5: Solve for x
    x = 21,560,723,019.45/138,327.74
  6. Step 6: Final answer
    x = 155,866.96

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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.