Home / 138,900.29-208,427.63-67,823.82

Finding the Fourth Proportional to 138,900.29, 208,427.63 and 67,823.82

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Solution

The fourth proportional to 138,900.29, 208,427.63 and 67,823.82 is: 101,773.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,900.29 : 208,427.63 = 67,823.82 : x
  2. Step 2: Convert to fraction form
    138,900.29/208,427.63 = 67,823.82/x
  3. Step 3: Cross multiply
    138,900.29x = 208,427.63 × 67,823.82
  4. Step 4: Simplify right side
    138,900.29x = 14,136,357,721.03
  5. Step 5: Solve for x
    x = 14,136,357,721.03/138,900.29
  6. Step 6: Final answer
    x = 101,773.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.