Home / 199,931.83-299,981.12-87,692.70

Finding the Fourth Proportional to 199,931.83, 299,981.12 and 87,692.70

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Solution

The fourth proportional to 199,931.83, 299,981.12 and 87,692.70 is: 131,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,931.83 : 299,981.12 = 87,692.70 : x
  2. Step 2: Convert to fraction form
    199,931.83/299,981.12 = 87,692.70/x
  3. Step 3: Cross multiply
    199,931.83x = 299,981.12 × 87,692.70
  4. Step 4: Simplify right side
    199,931.83x = 26,306,154,361.82
  5. Step 5: Solve for x
    x = 26,306,154,361.82/199,931.83
  6. Step 6: Final answer
    x = 131,575.62

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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.