Home / 111,981.93-154,535.02-61,680.93

Finding the Fourth Proportional to 111,981.93, 154,535.02 and 61,680.93

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Solution

The fourth proportional to 111,981.93, 154,535.02 and 61,680.93 is: 85,119.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,981.93 : 154,535.02 = 61,680.93 : x
  2. Step 2: Convert to fraction form
    111,981.93/154,535.02 = 61,680.93/x
  3. Step 3: Cross multiply
    111,981.93x = 154,535.02 × 61,680.93
  4. Step 4: Simplify right side
    111,981.93x = 9,531,863,751.17
  5. Step 5: Solve for x
    x = 9,531,863,751.17/111,981.93
  6. Step 6: Final answer
    x = 85,119.66

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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.