Home / 138,918.74-191,707.58-75,256.69

Finding the Fourth Proportional to 138,918.74, 191,707.58 and 75,256.69

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Solution

The fourth proportional to 138,918.74, 191,707.58 and 75,256.69 is: 103,854.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.74 : 191,707.58 = 75,256.69 : x
  2. Step 2: Convert to fraction form
    138,918.74/191,707.58 = 75,256.69/x
  3. Step 3: Cross multiply
    138,918.74x = 191,707.58 × 75,256.69
  4. Step 4: Simplify right side
    138,918.74x = 14,427,276,583.89
  5. Step 5: Solve for x
    x = 14,427,276,583.89/138,918.74
  6. Step 6: Final answer
    x = 103,854.07

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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.