Home / 89,740.20-134,610.30-77,274.30

Finding the Fourth Proportional to 89,740.20, 134,610.30 and 77,274.30

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Solution

The fourth proportional to 89,740.20, 134,610.30 and 77,274.30 is: 115,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,740.20 : 134,610.30 = 77,274.30 : x
  2. Step 2: Convert to fraction form
    89,740.20/134,610.30 = 77,274.30/x
  3. Step 3: Cross multiply
    89,740.20x = 134,610.30 × 77,274.30
  4. Step 4: Simplify right side
    89,740.20x = 10,401,916,705.29
  5. Step 5: Solve for x
    x = 10,401,916,705.29/89,740.20
  6. Step 6: Final answer
    x = 115,911.45

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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.