Home / 137,667,257.40-189,974,995.29-74,942,051.34

Finding the Fourth Proportional to 137,667,257.40, 189,974,995.29 and 74,942,051.34

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Solution

The fourth proportional to 137,667,257.40, 189,974,995.29 and 74,942,051.34 is: 103,416,862.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,667,257.40 : 189,974,995.29 = 74,942,051.34 : x
  2. Step 2: Convert to fraction form
    137,667,257.40/189,974,995.29 = 74,942,051.34/x
  3. Step 3: Cross multiply
    137,667,257.40x = 189,974,995.29 × 74,942,051.34
  4. Step 4: Simplify right side
    137,667,257.40x = 14,237,115,850,339,438
  5. Step 5: Solve for x
    x = 14,237,115,850,339,438/137,667,257.40
  6. Step 6: Final answer
    x = 103,416,862.65

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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.