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Finding the Fourth Proportional to 101,780.65, 140,455.11 and 63,008.18

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Solution

The fourth proportional to 101,780.65, 140,455.11 and 63,008.18 is: 86,949.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,780.65 : 140,455.11 = 63,008.18 : x
  2. Step 2: Convert to fraction form
    101,780.65/140,455.11 = 63,008.18/x
  3. Step 3: Cross multiply
    101,780.65x = 140,455.11 × 63,008.18
  4. Step 4: Simplify right side
    101,780.65x = 8,849,820,913.51
  5. Step 5: Solve for x
    x = 8,849,820,913.51/101,780.65
  6. Step 6: Final answer
    x = 86,949.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.