Home / 115,983.55-160,134.06-89,077.78

Finding the Fourth Proportional to 115,983.55, 160,134.06 and 89,077.78

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Solution

The fourth proportional to 115,983.55, 160,134.06 and 89,077.78 is: 122,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,983.55 : 160,134.06 = 89,077.78 : x
  2. Step 2: Convert to fraction form
    115,983.55/160,134.06 = 89,077.78/x
  3. Step 3: Cross multiply
    115,983.55x = 160,134.06 × 89,077.78
  4. Step 4: Simplify right side
    115,983.55x = 14,264,386,567.19
  5. Step 5: Solve for x
    x = 14,264,386,567.19/115,983.55
  6. Step 6: Final answer
    x = 122,986.29

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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.