Home / 105,685.16-158,421.12-66,269.95

Finding the Fourth Proportional to 105,685.16, 158,421.12 and 66,269.95

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Solution

The fourth proportional to 105,685.16, 158,421.12 and 66,269.95 is: 99,338.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,685.16 : 158,421.12 = 66,269.95 : x
  2. Step 2: Convert to fraction form
    105,685.16/158,421.12 = 66,269.95/x
  3. Step 3: Cross multiply
    105,685.16x = 158,421.12 × 66,269.95
  4. Step 4: Simplify right side
    105,685.16x = 10,498,559,056.78
  5. Step 5: Solve for x
    x = 10,498,559,056.78/105,685.16
  6. Step 6: Final answer
    x = 99,338.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.