Home / 103,617.16-155,222.35-53,729.87

Finding the Fourth Proportional to 103,617.16, 155,222.35 and 53,729.87

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Solution

The fourth proportional to 103,617.16, 155,222.35 and 53,729.87 is: 80,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.16 : 155,222.35 = 53,729.87 : x
  2. Step 2: Convert to fraction form
    103,617.16/155,222.35 = 53,729.87/x
  3. Step 3: Cross multiply
    103,617.16x = 155,222.35 × 53,729.87
  4. Step 4: Simplify right side
    103,617.16x = 8,340,075,776.16
  5. Step 5: Solve for x
    x = 8,340,075,776.16/103,617.16
  6. Step 6: Final answer
    x = 80,489.33

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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.