Home / 102,091.28-140,879.02-61,827.40

Finding the Fourth Proportional to 102,091.28, 140,879.02 and 61,827.40

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Solution

The fourth proportional to 102,091.28, 140,879.02 and 61,827.40 is: 85,317.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,091.28 : 140,879.02 = 61,827.40 : x
  2. Step 2: Convert to fraction form
    102,091.28/140,879.02 = 61,827.40/x
  3. Step 3: Cross multiply
    102,091.28x = 140,879.02 × 61,827.40
  4. Step 4: Simplify right side
    102,091.28x = 8,710,183,521.15
  5. Step 5: Solve for x
    x = 8,710,183,521.15/102,091.28
  6. Step 6: Final answer
    x = 85,317.61

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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.