Home / 78,253.19-117,379.78-19,088.46

Finding the Fourth Proportional to 78,253.19, 117,379.78 and 19,088.46

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Solution

The fourth proportional to 78,253.19, 117,379.78 and 19,088.46 is: 28,632.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.19 : 117,379.78 = 19,088.46 : x
  2. Step 2: Convert to fraction form
    78,253.19/117,379.78 = 19,088.46/x
  3. Step 3: Cross multiply
    78,253.19x = 117,379.78 × 19,088.46
  4. Step 4: Simplify right side
    78,253.19x = 2,240,598,553.00
  5. Step 5: Solve for x
    x = 2,240,598,553.00/78,253.19
  6. Step 6: Final answer
    x = 28,632.68

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1.5x scale

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.