Home / 103,525.90-155,288.85-91,716.10

Finding the Fourth Proportional to 103,525.90, 155,288.85 and 91,716.10

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Solution

The fourth proportional to 103,525.90, 155,288.85 and 91,716.10 is: 137,574.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,525.90 : 155,288.85 = 91,716.10 : x
  2. Step 2: Convert to fraction form
    103,525.90/155,288.85 = 91,716.10/x
  3. Step 3: Cross multiply
    103,525.90x = 155,288.85 × 91,716.10
  4. Step 4: Simplify right side
    103,525.90x = 14,242,487,695.49
  5. Step 5: Solve for x
    x = 14,242,487,695.49/103,525.90
  6. Step 6: Final answer
    x = 137,574.15

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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.