Home / 138,617.39-191,291.87-74,955.03

Finding the Fourth Proportional to 138,617.39, 191,291.87 and 74,955.03

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Solution

The fourth proportional to 138,617.39, 191,291.87 and 74,955.03 is: 103,437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,617.39 : 191,291.87 = 74,955.03 : x
  2. Step 2: Convert to fraction form
    138,617.39/191,291.87 = 74,955.03/x
  3. Step 3: Cross multiply
    138,617.39x = 191,291.87 × 74,955.03
  4. Step 4: Simplify right side
    138,617.39x = 14,338,287,479.83
  5. Step 5: Solve for x
    x = 14,338,287,479.83/138,617.39
  6. Step 6: Final answer
    x = 103,437.87

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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.