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Finding the Fourth Proportional to 106,420.79, 146,859.78 and 58,673.11

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Solution

The fourth proportional to 106,420.79, 146,859.78 and 58,673.11 is: 80,968.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,420.79 : 146,859.78 = 58,673.11 : x
  2. Step 2: Convert to fraction form
    106,420.79/146,859.78 = 58,673.11/x
  3. Step 3: Cross multiply
    106,420.79x = 146,859.78 × 58,673.11
  4. Step 4: Simplify right side
    106,420.79x = 8,616,720,154.75
  5. Step 5: Solve for x
    x = 8,616,720,154.75/106,420.79
  6. Step 6: Final answer
    x = 80,968.39

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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.