Home / 105,205.11-145,193.49-62,763.63

Finding the Fourth Proportional to 105,205.11, 145,193.49 and 62,763.63

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Solution

The fourth proportional to 105,205.11, 145,193.49 and 62,763.63 is: 86,620.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,205.11 : 145,193.49 = 62,763.63 : x
  2. Step 2: Convert to fraction form
    105,205.11/145,193.49 = 62,763.63/x
  3. Step 3: Cross multiply
    105,205.11x = 145,193.49 × 62,763.63
  4. Step 4: Simplify right side
    105,205.11x = 9,112,870,484.77
  5. Step 5: Solve for x
    x = 9,112,870,484.77/105,205.11
  6. Step 6: Final answer
    x = 86,620.04

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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.