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Finding the Fourth Proportional to 104,886.91, 144,742.63 and 57,139.24

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Solution

The fourth proportional to 104,886.91, 144,742.63 and 57,139.24 is: 78,851.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,886.91 : 144,742.63 = 57,139.24 : x
  2. Step 2: Convert to fraction form
    104,886.91/144,742.63 = 57,139.24/x
  3. Step 3: Cross multiply
    104,886.91x = 144,742.63 × 57,139.24
  4. Step 4: Simplify right side
    104,886.91x = 8,270,483,873.80
  5. Step 5: Solve for x
    x = 8,270,483,873.80/104,886.91
  6. Step 6: Final answer
    x = 78,851.44

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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.