Home / 103,535.20-155,302.80-91,069.30

Finding the Fourth Proportional to 103,535.20, 155,302.80 and 91,069.30

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Solution

The fourth proportional to 103,535.20, 155,302.80 and 91,069.30 is: 136,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,535.20 : 155,302.80 = 91,069.30 : x
  2. Step 2: Convert to fraction form
    103,535.20/155,302.80 = 91,069.30/x
  3. Step 3: Cross multiply
    103,535.20x = 155,302.80 × 91,069.30
  4. Step 4: Simplify right side
    103,535.20x = 14,143,317,284.04
  5. Step 5: Solve for x
    x = 14,143,317,284.04/103,535.20
  6. Step 6: Final answer
    x = 136,603.95

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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.