Home / 138,732.80-191,450.88-75,071.68

Finding the Fourth Proportional to 138,732.80, 191,450.88 and 75,071.68

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Solution

The fourth proportional to 138,732.80, 191,450.88 and 75,071.68 is: 103,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,732.80 : 191,450.88 = 75,071.68 : x
  2. Step 2: Convert to fraction form
    138,732.80/191,450.88 = 75,071.68/x
  3. Step 3: Cross multiply
    138,732.80x = 191,450.88 × 75,071.68
  4. Step 4: Simplify right side
    138,732.80x = 14,372,539,199.08
  5. Step 5: Solve for x
    x = 14,372,539,199.08/138,732.80
  6. Step 6: Final answer
    x = 103,598.71

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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.