Home / 124,006.51-171,065.90-81,011.17

Finding the Fourth Proportional to 124,006.51, 171,065.90 and 81,011.17

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Solution

The fourth proportional to 124,006.51, 171,065.90 and 81,011.17 is: 111,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,006.51 : 171,065.90 = 81,011.17 : x
  2. Step 2: Convert to fraction form
    124,006.51/171,065.90 = 81,011.17/x
  3. Step 3: Cross multiply
    124,006.51x = 171,065.90 × 81,011.17
  4. Step 4: Simplify right side
    124,006.51x = 13,858,248,301.05
  5. Step 5: Solve for x
    x = 13,858,248,301.05/124,006.51
  6. Step 6: Final answer
    x = 111,754.20

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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.