Home / 138,836.34-191,594.22-75,174.21

Finding the Fourth Proportional to 138,836.34, 191,594.22 and 75,174.21

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Solution

The fourth proportional to 138,836.34, 191,594.22 and 75,174.21 is: 103,740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,836.34 : 191,594.22 = 75,174.21 : x
  2. Step 2: Convert to fraction form
    138,836.34/191,594.22 = 75,174.21/x
  3. Step 3: Cross multiply
    138,836.34x = 191,594.22 × 75,174.21
  4. Step 4: Simplify right side
    138,836.34x = 14,402,944,129.07
  5. Step 5: Solve for x
    x = 14,402,944,129.07/138,836.34
  6. Step 6: Final answer
    x = 103,740.45

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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.