Home / 81,776.10-122,664.15-70,112.10

Finding the Fourth Proportional to 81,776.10, 122,664.15 and 70,112.10

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Solution

The fourth proportional to 81,776.10, 122,664.15 and 70,112.10 is: 105,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,776.10 : 122,664.15 = 70,112.10 : x
  2. Step 2: Convert to fraction form
    81,776.10/122,664.15 = 70,112.10/x
  3. Step 3: Cross multiply
    81,776.10x = 122,664.15 × 70,112.10
  4. Step 4: Simplify right side
    81,776.10x = 8,600,241,151.22
  5. Step 5: Solve for x
    x = 8,600,241,151.22/81,776.10
  6. Step 6: Final answer
    x = 105,168.15

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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.