Home / 126,496.79-189,305.04-78,442.94

Finding the Fourth Proportional to 126,496.79, 189,305.04 and 78,442.94

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Solution

The fourth proportional to 126,496.79, 189,305.04 and 78,442.94 is: 117,391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,496.79 : 189,305.04 = 78,442.94 : x
  2. Step 2: Convert to fraction form
    126,496.79/189,305.04 = 78,442.94/x
  3. Step 3: Cross multiply
    126,496.79x = 189,305.04 × 78,442.94
  4. Step 4: Simplify right side
    126,496.79x = 14,849,643,894.42
  5. Step 5: Solve for x
    x = 14,849,643,894.42/126,496.79
  6. Step 6: Final answer
    x = 117,391.47

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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.