Home / 138,267.11-190,826.80-77,849.53

Finding the Fourth Proportional to 138,267.11, 190,826.80 and 77,849.53

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Solution

The fourth proportional to 138,267.11, 190,826.80 and 77,849.53 is: 107,442.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,267.11 : 190,826.80 = 77,849.53 : x
  2. Step 2: Convert to fraction form
    138,267.11/190,826.80 = 77,849.53/x
  3. Step 3: Cross multiply
    138,267.11x = 190,826.80 × 77,849.53
  4. Step 4: Simplify right side
    138,267.11x = 14,855,776,019.71
  5. Step 5: Solve for x
    x = 14,855,776,019.71/138,267.11
  6. Step 6: Final answer
    x = 107,442.59

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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.