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Finding the Fourth Proportional to 128,929.70, 193,394.55 and 93,500.30

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Solution

The fourth proportional to 128,929.70, 193,394.55 and 93,500.30 is: 140,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,929.70 : 193,394.55 = 93,500.30 : x
  2. Step 2: Convert to fraction form
    128,929.70/193,394.55 = 93,500.30/x
  3. Step 3: Cross multiply
    128,929.70x = 193,394.55 × 93,500.30
  4. Step 4: Simplify right side
    128,929.70x = 18,082,448,443.37
  5. Step 5: Solve for x
    x = 18,082,448,443.37/128,929.70
  6. Step 6: Final answer
    x = 140,250.45

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1.5x scale

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.