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Finding the Fourth Proportional to 111,470.38, 153,829.12 and 61,172.62

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Solution

The fourth proportional to 111,470.38, 153,829.12 and 61,172.62 is: 84,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,470.38 : 153,829.12 = 61,172.62 : x
  2. Step 2: Convert to fraction form
    111,470.38/153,829.12 = 61,172.62/x
  3. Step 3: Cross multiply
    111,470.38x = 153,829.12 × 61,172.62
  4. Step 4: Simplify right side
    111,470.38x = 9,410,130,302.69
  5. Step 5: Solve for x
    x = 9,410,130,302.69/111,470.38
  6. Step 6: Final answer
    x = 84,418.21

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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.