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Finding the Fourth Proportional to 106,990.45, 147,645 and 59,242.77

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Solution

The fourth proportional to 106,990.45, 147,645 and 59,242.77 is: 81,754.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,990.45 : 147,645 = 59,242.77 : x
  2. Step 2: Convert to fraction form
    106,990.45/147,645 = 59,242.77/x
  3. Step 3: Cross multiply
    106,990.45x = 147,645 × 59,242.77
  4. Step 4: Simplify right side
    106,990.45x = 8,746,898,776.65
  5. Step 5: Solve for x
    x = 8,746,898,776.65/106,990.45
  6. Step 6: Final answer
    x = 81,754.01

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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.