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Finding the Fourth Proportional to 111,446.63, 153,799.05 and 61,145.63

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Solution

The fourth proportional to 111,446.63, 153,799.05 and 61,145.63 is: 84,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,446.63 : 153,799.05 = 61,145.63 : x
  2. Step 2: Convert to fraction form
    111,446.63/153,799.05 = 61,145.63/x
  3. Step 3: Cross multiply
    111,446.63x = 153,799.05 × 61,145.63
  4. Step 4: Simplify right side
    111,446.63x = 9,404,139,036.66
  5. Step 5: Solve for x
    x = 9,404,139,036.66/111,446.63
  6. Step 6: Final answer
    x = 84,382.45

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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.