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Finding the Fourth Proportional to 123,482.02, 170,230.66 and 87,658.96

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Solution

The fourth proportional to 123,482.02, 170,230.66 and 87,658.96 is: 120,845.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,482.02 : 170,230.66 = 87,658.96 : x
  2. Step 2: Convert to fraction form
    123,482.02/170,230.66 = 87,658.96/x
  3. Step 3: Cross multiply
    123,482.02x = 170,230.66 × 87,658.96
  4. Step 4: Simplify right side
    123,482.02x = 14,922,242,615.71
  5. Step 5: Solve for x
    x = 14,922,242,615.71/123,482.02
  6. Step 6: Final answer
    x = 120,845.47

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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.