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Finding the Fourth Proportional to 134,871.60, 202,307.40 and 84,789.30

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Solution

The fourth proportional to 134,871.60, 202,307.40 and 84,789.30 is: 127,183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,871.60 : 202,307.40 = 84,789.30 : x
  2. Step 2: Convert to fraction form
    134,871.60/202,307.40 = 84,789.30/x
  3. Step 3: Cross multiply
    134,871.60x = 202,307.40 × 84,789.30
  4. Step 4: Simplify right side
    134,871.60x = 17,153,502,830.82
  5. Step 5: Solve for x
    x = 17,153,502,830.82/134,871.60
  6. Step 6: Final answer
    x = 127,183.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.