Home / 103,616.85-155,655.68-99,700.05

Finding the Fourth Proportional to 103,616.85, 155,655.68 and 99,700.05

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Solution

The fourth proportional to 103,616.85, 155,655.68 and 99,700.05 is: 149,771.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.85 : 155,655.68 = 99,700.05 : x
  2. Step 2: Convert to fraction form
    103,616.85/155,655.68 = 99,700.05/x
  3. Step 3: Cross multiply
    103,616.85x = 155,655.68 × 99,700.05
  4. Step 4: Simplify right side
    103,616.85x = 15,518,878,580.28
  5. Step 5: Solve for x
    x = 15,518,878,580.28/103,616.85
  6. Step 6: Final answer
    x = 149,771.77

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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.