Home / 140,378.10-193,721.87-76,715.91

Finding the Fourth Proportional to 140,378.10, 193,721.87 and 76,715.91

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Solution

The fourth proportional to 140,378.10, 193,721.87 and 76,715.91 is: 105,868.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,378.10 : 193,721.87 = 76,715.91 : x
  2. Step 2: Convert to fraction form
    140,378.10/193,721.87 = 76,715.91/x
  3. Step 3: Cross multiply
    140,378.10x = 193,721.87 × 76,715.91
  4. Step 4: Simplify right side
    140,378.10x = 14,861,549,160.37
  5. Step 5: Solve for x
    x = 14,861,549,160.37/140,378.10
  6. Step 6: Final answer
    x = 105,868.00

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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.