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Finding the Fourth Proportional to 111,607.52, 154,018.48 and 61,309.76

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Solution

The fourth proportional to 111,607.52, 154,018.48 and 61,309.76 is: 84,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,607.52 : 154,018.48 = 61,309.76 : x
  2. Step 2: Convert to fraction form
    111,607.52/154,018.48 = 61,309.76/x
  3. Step 3: Cross multiply
    111,607.52x = 154,018.48 × 61,309.76
  4. Step 4: Simplify right side
    111,607.52x = 9,442,836,044.36
  5. Step 5: Solve for x
    x = 9,442,836,044.36/111,607.52
  6. Step 6: Final answer
    x = 84,607.53

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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.