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Finding the Fourth Proportional to 111,072.51, 153,217.76 and 68,072.84

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Solution

The fourth proportional to 111,072.51, 153,217.76 and 68,072.84 is: 93,902.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,072.51 : 153,217.76 = 68,072.84 : x
  2. Step 2: Convert to fraction form
    111,072.51/153,217.76 = 68,072.84/x
  3. Step 3: Cross multiply
    111,072.51x = 153,217.76 × 68,072.84
  4. Step 4: Simplify right side
    111,072.51x = 10,429,966,955.19
  5. Step 5: Solve for x
    x = 10,429,966,955.19/111,072.51
  6. Step 6: Final answer
    x = 93,902.33

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1.5x scale

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.