Home / 187,577.10-258,889.10-111,139.22

Finding the Fourth Proportional to 187,577.10, 258,889.10 and 111,139.22

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Solution

The fourth proportional to 187,577.10, 258,889.10 and 111,139.22 is: 153,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,577.10 : 258,889.10 = 111,139.22 : x
  2. Step 2: Convert to fraction form
    187,577.10/258,889.10 = 111,139.22/x
  3. Step 3: Cross multiply
    187,577.10x = 258,889.10 × 111,139.22
  4. Step 4: Simplify right side
    187,577.10x = 28,772,732,732.03
  5. Step 5: Solve for x
    x = 28,772,732,732.03/187,577.10
  6. Step 6: Final answer
    x = 153,391.50

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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.