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Finding the Fourth Proportional to 86,334.67, 118,903.57 and 74,393.65

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Solution

The fourth proportional to 86,334.67, 118,903.57 and 74,393.65 is: 102,457.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,334.67 : 118,903.57 = 74,393.65 : x
  2. Step 2: Convert to fraction form
    86,334.67/118,903.57 = 74,393.65/x
  3. Step 3: Cross multiply
    86,334.67x = 118,903.57 × 74,393.65
  4. Step 4: Simplify right side
    86,334.67x = 8,845,670,570.33
  5. Step 5: Solve for x
    x = 8,845,670,570.33/86,334.67
  6. Step 6: Final answer
    x = 102,457.92

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1.5x scale

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.