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Finding the Fourth Proportional to 111,784.68, 154,259.64 and 61,483.68

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Solution

The fourth proportional to 111,784.68, 154,259.64 and 61,483.68 is: 84,845.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,784.68 : 154,259.64 = 61,483.68 : x
  2. Step 2: Convert to fraction form
    111,784.68/154,259.64 = 61,483.68/x
  3. Step 3: Cross multiply
    111,784.68x = 154,259.64 × 61,483.68
  4. Step 4: Simplify right side
    111,784.68x = 9,484,450,342.68
  5. Step 5: Solve for x
    x = 9,484,450,342.68/111,784.68
  6. Step 6: Final answer
    x = 84,845.71

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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.