Home / 115,983.68-160,134.23-89,077.91

Finding the Fourth Proportional to 115,983.68, 160,134.23 and 89,077.91

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Solution

The fourth proportional to 115,983.68, 160,134.23 and 89,077.91 is: 122,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,983.68 : 160,134.23 = 89,077.91 : x
  2. Step 2: Convert to fraction form
    115,983.68/160,134.23 = 89,077.91/x
  3. Step 3: Cross multiply
    115,983.68x = 160,134.23 × 89,077.91
  4. Step 4: Simplify right side
    115,983.68x = 14,264,421,949.88
  5. Step 5: Solve for x
    x = 14,264,421,949.88/115,983.68
  6. Step 6: Final answer
    x = 122,986.46

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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.