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Finding the Fourth Proportional to 106,130.78, 146,359.95 and 67,902.42

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Solution

The fourth proportional to 106,130.78, 146,359.95 and 67,902.42 is: 93,641.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,130.78 : 146,359.95 = 67,902.42 : x
  2. Step 2: Convert to fraction form
    106,130.78/146,359.95 = 67,902.42/x
  3. Step 3: Cross multiply
    106,130.78x = 146,359.95 × 67,902.42
  4. Step 4: Simplify right side
    106,130.78x = 9,938,194,796.08
  5. Step 5: Solve for x
    x = 9,938,194,796.08/106,130.78
  6. Step 6: Final answer
    x = 93,641.03

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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.