Home / 138,462.13-191,087.82-77,212.46

Finding the Fourth Proportional to 138,462.13, 191,087.82 and 77,212.46

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Solution

The fourth proportional to 138,462.13, 191,087.82 and 77,212.46 is: 106,558.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,462.13 : 191,087.82 = 77,212.46 : x
  2. Step 2: Convert to fraction form
    138,462.13/191,087.82 = 77,212.46/x
  3. Step 3: Cross multiply
    138,462.13x = 191,087.82 × 77,212.46
  4. Step 4: Simplify right side
    138,462.13x = 14,754,360,381.36
  5. Step 5: Solve for x
    x = 14,754,360,381.36/138,462.13
  6. Step 6: Final answer
    x = 106,558.82

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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.