Home / 141,868.80-212,803.20-139,795.20

Finding the Fourth Proportional to 141,868.80, 212,803.20 and 139,795.20

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Solution

The fourth proportional to 141,868.80, 212,803.20 and 139,795.20 is: 209,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,868.80 : 212,803.20 = 139,795.20 : x
  2. Step 2: Convert to fraction form
    141,868.80/212,803.20 = 139,795.20/x
  3. Step 3: Cross multiply
    141,868.80x = 212,803.20 × 139,795.20
  4. Step 4: Simplify right side
    141,868.80x = 29,748,865,904.64
  5. Step 5: Solve for x
    x = 29,748,865,904.64/141,868.80
  6. Step 6: Final answer
    x = 209,692.80

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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.