Home / 138,810.39-191,558.40-75,148.19

Finding the Fourth Proportional to 138,810.39, 191,558.40 and 75,148.19

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Solution

The fourth proportional to 138,810.39, 191,558.40 and 75,148.19 is: 103,704.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,810.39 : 191,558.40 = 75,148.19 : x
  2. Step 2: Convert to fraction form
    138,810.39/191,558.40 = 75,148.19/x
  3. Step 3: Cross multiply
    138,810.39x = 191,558.40 × 75,148.19
  4. Step 4: Simplify right side
    138,810.39x = 14,395,266,081.50
  5. Step 5: Solve for x
    x = 14,395,266,081.50/138,810.39
  6. Step 6: Final answer
    x = 103,704.53

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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.