Home / 134,834.40-186,108.48-78,264

Finding the Fourth Proportional to 134,834.40, 186,108.48 and 78,264

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Solution

The fourth proportional to 134,834.40, 186,108.48 and 78,264 is: 108,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,834.40 : 186,108.48 = 78,264 : x
  2. Step 2: Convert to fraction form
    134,834.40/186,108.48 = 78,264/x
  3. Step 3: Cross multiply
    134,834.40x = 186,108.48 × 78,264
  4. Step 4: Simplify right side
    134,834.40x = 14,565,594,078.72
  5. Step 5: Solve for x
    x = 14,565,594,078.72/134,834.40
  6. Step 6: Final answer
    x = 108,025.80

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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.