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Finding the Fourth Proportional to 106,021.77, 146,295.88 and 65,720.89

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Solution

The fourth proportional to 106,021.77, 146,295.88 and 65,720.89 is: 90,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,021.77 : 146,295.88 = 65,720.89 : x
  2. Step 2: Convert to fraction form
    106,021.77/146,295.88 = 65,720.89/x
  3. Step 3: Cross multiply
    106,021.77x = 146,295.88 × 65,720.89
  4. Step 4: Simplify right side
    106,021.77x = 9,614,695,436.93
  5. Step 5: Solve for x
    x = 9,614,695,436.93/106,021.77
  6. Step 6: Final answer
    x = 90,686.05

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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.