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Finding the Fourth Proportional to 111,749.47, 154,214.27 and 61,448.47

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Solution

The fourth proportional to 111,749.47, 154,214.27 and 61,448.47 is: 84,798.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,749.47 : 154,214.27 = 61,448.47 : x
  2. Step 2: Convert to fraction form
    111,749.47/154,214.27 = 61,448.47/x
  3. Step 3: Cross multiply
    111,749.47x = 154,214.27 × 61,448.47
  4. Step 4: Simplify right side
    111,749.47x = 9,476,230,943.67
  5. Step 5: Solve for x
    x = 9,476,230,943.67/111,749.47
  6. Step 6: Final answer
    x = 84,798.89

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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.