Home / 111,579.84-153,981.27-61,278.84

Finding the Fourth Proportional to 111,579.84, 153,981.27 and 61,278.84

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Solution

The fourth proportional to 111,579.84, 153,981.27 and 61,278.84 is: 84,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.84 : 153,981.27 = 61,278.84 : x
  2. Step 2: Convert to fraction form
    111,579.84/153,981.27 = 61,278.84/x
  3. Step 3: Cross multiply
    111,579.84x = 153,981.27 × 61,278.84
  4. Step 4: Simplify right side
    111,579.84x = 9,435,793,607.33
  5. Step 5: Solve for x
    x = 9,435,793,607.33/111,579.84
  6. Step 6: Final answer
    x = 84,565.40

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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.