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Finding the Fourth Proportional to 112,647.65, 155,443.12 and 67,316.60

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Solution

The fourth proportional to 112,647.65, 155,443.12 and 67,316.60 is: 92,890.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,647.65 : 155,443.12 = 67,316.60 : x
  2. Step 2: Convert to fraction form
    112,647.65/155,443.12 = 67,316.60/x
  3. Step 3: Cross multiply
    112,647.65x = 155,443.12 × 67,316.60
  4. Step 4: Simplify right side
    112,647.65x = 10,463,902,552.11
  5. Step 5: Solve for x
    x = 10,463,902,552.11/112,647.65
  6. Step 6: Final answer
    x = 92,890.56

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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.