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Finding the Fourth Proportional to 111,937.16, 154,473 and 61,636.16

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Solution

The fourth proportional to 111,937.16, 154,473 and 61,636.16 is: 85,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,937.16 : 154,473 = 61,636.16 : x
  2. Step 2: Convert to fraction form
    111,937.16/154,473 = 61,636.16/x
  3. Step 3: Cross multiply
    111,937.16x = 154,473 × 61,636.16
  4. Step 4: Simplify right side
    111,937.16x = 9,521,122,543.68
  5. Step 5: Solve for x
    x = 9,521,122,543.68/111,937.16
  6. Step 6: Final answer
    x = 85,057.75

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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.