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Finding the Fourth Proportional to 111,803.42, 154,291.12 and 61,502.42

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Solution

The fourth proportional to 111,803.42, 154,291.12 and 61,502.42 is: 84,874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,803.42 : 154,291.12 = 61,502.42 : x
  2. Step 2: Convert to fraction form
    111,803.42/154,291.12 = 61,502.42/x
  3. Step 3: Cross multiply
    111,803.42x = 154,291.12 × 61,502.42
  4. Step 4: Simplify right side
    111,803.42x = 9,489,277,264.51
  5. Step 5: Solve for x
    x = 9,489,277,264.51/111,803.42
  6. Step 6: Final answer
    x = 84,874.66

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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.