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Finding the Fourth Proportional to 111,860.76, 154,367.88 and 61,559.76

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Solution

The fourth proportional to 111,860.76, 154,367.88 and 61,559.76 is: 84,952.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,860.76 : 154,367.88 = 61,559.76 : x
  2. Step 2: Convert to fraction form
    111,860.76/154,367.88 = 61,559.76/x
  3. Step 3: Cross multiply
    111,860.76x = 154,367.88 × 61,559.76
  4. Step 4: Simplify right side
    111,860.76x = 9,502,849,644.51
  5. Step 5: Solve for x
    x = 9,502,849,644.51/111,860.76
  6. Step 6: Final answer
    x = 84,952.49

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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.