Home / 207,657,287.70-311,485,931.55-86,472,993.30

Finding the Fourth Proportional to 207,657,287.70, 311,485,931.55 and 86,472,993.30

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Solution

The fourth proportional to 207,657,287.70, 311,485,931.55 and 86,472,993.30 is: 129,709,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,657,287.70 : 311,485,931.55 = 86,472,993.30 : x
  2. Step 2: Convert to fraction form
    207,657,287.70/311,485,931.55 = 86,472,993.30/x
  3. Step 3: Cross multiply
    207,657,287.70x = 311,485,931.55 × 86,472,993.30
  4. Step 4: Simplify right side
    207,657,287.70x = 26,935,120,871,967,408
  5. Step 5: Solve for x
    x = 26,935,120,871,967,408/207,657,287.70
  6. Step 6: Final answer
    x = 129,709,489.95

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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.