Home / 105,666.22-145,821.15-57,269.70

Finding the Fourth Proportional to 105,666.22, 145,821.15 and 57,269.70

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Solution

The fourth proportional to 105,666.22, 145,821.15 and 57,269.70 is: 79,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,666.22 : 145,821.15 = 57,269.70 : x
  2. Step 2: Convert to fraction form
    105,666.22/145,821.15 = 57,269.70/x
  3. Step 3: Cross multiply
    105,666.22x = 145,821.15 × 57,269.70
  4. Step 4: Simplify right side
    105,666.22x = 8,351,132,818.44
  5. Step 5: Solve for x
    x = 8,351,132,818.44/105,666.22
  6. Step 6: Final answer
    x = 79,033.14

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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.