Home / 123,772.05-170,560.49-87,861.51

Finding the Fourth Proportional to 123,772.05, 170,560.49 and 87,861.51

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Solution

The fourth proportional to 123,772.05, 170,560.49 and 87,861.51 is: 121,075.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,772.05 : 170,560.49 = 87,861.51 : x
  2. Step 2: Convert to fraction form
    123,772.05/170,560.49 = 87,861.51/x
  3. Step 3: Cross multiply
    123,772.05x = 170,560.49 × 87,861.51
  4. Step 4: Simplify right side
    123,772.05x = 14,985,701,758.43
  5. Step 5: Solve for x
    x = 14,985,701,758.43/123,772.05
  6. Step 6: Final answer
    x = 121,075.01

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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.