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Finding the Fourth Proportional to 160,238.66, 240,502.44 and 85,421.12

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Solution

The fourth proportional to 160,238.66, 240,502.44 and 85,421.12 is: 128,208.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,238.66 : 240,502.44 = 85,421.12 : x
  2. Step 2: Convert to fraction form
    160,238.66/240,502.44 = 85,421.12/x
  3. Step 3: Cross multiply
    160,238.66x = 240,502.44 × 85,421.12
  4. Step 4: Simplify right side
    160,238.66x = 20,543,987,787.53
  5. Step 5: Solve for x
    x = 20,543,987,787.53/160,238.66
  6. Step 6: Final answer
    x = 128,208.68

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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.