Home / 150,777.84-208,077.04-81,870.21

Finding the Fourth Proportional to 150,777.84, 208,077.04 and 81,870.21

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Solution

The fourth proportional to 150,777.84, 208,077.04 and 81,870.21 is: 112,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,777.84 : 208,077.04 = 81,870.21 : x
  2. Step 2: Convert to fraction form
    150,777.84/208,077.04 = 81,870.21/x
  3. Step 3: Cross multiply
    150,777.84x = 208,077.04 × 81,870.21
  4. Step 4: Simplify right side
    150,777.84x = 17,035,310,756.30
  5. Step 5: Solve for x
    x = 17,035,310,756.30/150,777.84
  6. Step 6: Final answer
    x = 112,982.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.