Home / 103,661.28-155,523.51-53,777.16

Finding the Fourth Proportional to 103,661.28, 155,523.51 and 53,777.16

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Solution

The fourth proportional to 103,661.28, 155,523.51 and 53,777.16 is: 80,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661.28 : 155,523.51 = 53,777.16 : x
  2. Step 2: Convert to fraction form
    103,661.28/155,523.51 = 53,777.16/x
  3. Step 3: Cross multiply
    103,661.28x = 155,523.51 × 53,777.16
  4. Step 4: Simplify right side
    103,661.28x = 8,363,612,681.03
  5. Step 5: Solve for x
    x = 8,363,612,681.03/103,661.28
  6. Step 6: Final answer
    x = 80,682.13

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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.