Home / 103,665.16-155,294.62-53,778.06

Finding the Fourth Proportional to 103,665.16, 155,294.62 and 53,778.06

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Solution

The fourth proportional to 103,665.16, 155,294.62 and 53,778.06 is: 80,561.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,665.16 : 155,294.62 = 53,778.06 : x
  2. Step 2: Convert to fraction form
    103,665.16/155,294.62 = 53,778.06/x
  3. Step 3: Cross multiply
    103,665.16x = 155,294.62 × 53,778.06
  4. Step 4: Simplify right side
    103,665.16x = 8,351,443,392.04
  5. Step 5: Solve for x
    x = 8,351,443,392.04/103,665.16
  6. Step 6: Final answer
    x = 80,561.72

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1.5x scale

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.