Home / 297,119.76-445,635.80-86,701.20

Finding the Fourth Proportional to 297,119.76, 445,635.80 and 86,701.20

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Solution

The fourth proportional to 297,119.76, 445,635.80 and 86,701.20 is: 130,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,119.76 : 445,635.80 = 86,701.20 : x
  2. Step 2: Convert to fraction form
    297,119.76/445,635.80 = 86,701.20/x
  3. Step 3: Cross multiply
    297,119.76x = 445,635.80 × 86,701.20
  4. Step 4: Simplify right side
    297,119.76x = 38,637,158,622.96
  5. Step 5: Solve for x
    x = 38,637,158,622.96/297,119.76
  6. Step 6: Final answer
    x = 130,039.01

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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.