Home / 137,669.72-189,987.12-77,244.74

Finding the Fourth Proportional to 137,669.72, 189,987.12 and 77,244.74

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Solution

The fourth proportional to 137,669.72, 189,987.12 and 77,244.74 is: 106,599.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,669.72 : 189,987.12 = 77,244.74 : x
  2. Step 2: Convert to fraction form
    137,669.72/189,987.12 = 77,244.74/x
  3. Step 3: Cross multiply
    137,669.72x = 189,987.12 × 77,244.74
  4. Step 4: Simplify right side
    137,669.72x = 14,675,504,737.81
  5. Step 5: Solve for x
    x = 14,675,504,737.81/137,669.72
  6. Step 6: Final answer
    x = 106,599.36

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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.