Home / 85,169.04-127,840.74-70,330.68

Finding the Fourth Proportional to 85,169.04, 127,840.74 and 70,330.68

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Solution

The fourth proportional to 85,169.04, 127,840.74 and 70,330.68 is: 105,568.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,169.04 : 127,840.74 = 70,330.68 : x
  2. Step 2: Convert to fraction form
    85,169.04/127,840.74 = 70,330.68/x
  3. Step 3: Cross multiply
    85,169.04x = 127,840.74 × 70,330.68
  4. Step 4: Simplify right side
    85,169.04x = 8,991,126,175.90
  5. Step 5: Solve for x
    x = 8,991,126,175.90/85,169.04
  6. Step 6: Final answer
    x = 105,568.01

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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.