Home / 115,626.36-159,543.54-64,640.10

Finding the Fourth Proportional to 115,626.36, 159,543.54 and 64,640.10

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Solution

The fourth proportional to 115,626.36, 159,543.54 and 64,640.10 is: 89,191.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,626.36 : 159,543.54 = 64,640.10 : x
  2. Step 2: Convert to fraction form
    115,626.36/159,543.54 = 64,640.10/x
  3. Step 3: Cross multiply
    115,626.36x = 159,543.54 × 64,640.10
  4. Step 4: Simplify right side
    115,626.36x = 10,312,910,379.95
  5. Step 5: Solve for x
    x = 10,312,910,379.95/115,626.36
  6. Step 6: Final answer
    x = 89,191.69

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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.