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Finding the Fourth Proportional to 160,394, 221,343.72 and 93,370.64

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Solution

The fourth proportional to 160,394, 221,343.72 and 93,370.64 is: 128,851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,394 : 221,343.72 = 93,370.64 : x
  2. Step 2: Convert to fraction form
    160,394/221,343.72 = 93,370.64/x
  3. Step 3: Cross multiply
    160,394x = 221,343.72 × 93,370.64
  4. Step 4: Simplify right side
    160,394x = 20,667,004,796.38
  5. Step 5: Solve for x
    x = 20,667,004,796.38/160,394
  6. Step 6: Final answer
    x = 128,851.48

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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.