Home / 137,981.10-190,411.65-76,724.85

Finding the Fourth Proportional to 137,981.10, 190,411.65 and 76,724.85

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Solution

The fourth proportional to 137,981.10, 190,411.65 and 76,724.85 is: 105,879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,981.10 : 190,411.65 = 76,724.85 : x
  2. Step 2: Convert to fraction form
    137,981.10/190,411.65 = 76,724.85/x
  3. Step 3: Cross multiply
    137,981.10x = 190,411.65 × 76,724.85
  4. Step 4: Simplify right side
    137,981.10x = 14,609,305,284.50
  5. Step 5: Solve for x
    x = 14,609,305,284.50/137,981.10
  6. Step 6: Final answer
    x = 105,879.03

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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.