Home / 85,439.18-118,062.34-74,072.18

Finding the Fourth Proportional to 85,439.18, 118,062.34 and 74,072.18

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Solution

The fourth proportional to 85,439.18, 118,062.34 and 74,072.18 is: 102,355.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,439.18 : 118,062.34 = 74,072.18 : x
  2. Step 2: Convert to fraction form
    85,439.18/118,062.34 = 74,072.18/x
  3. Step 3: Cross multiply
    85,439.18x = 118,062.34 × 74,072.18
  4. Step 4: Simplify right side
    85,439.18x = 8,745,134,124.21
  5. Step 5: Solve for x
    x = 8,745,134,124.21/85,439.18
  6. Step 6: Final answer
    x = 102,355.09

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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.