Home / 155,481.36-214,561.80-86,570.16

Finding the Fourth Proportional to 155,481.36, 214,561.80 and 86,570.16

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Solution

The fourth proportional to 155,481.36, 214,561.80 and 86,570.16 is: 119,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,481.36 : 214,561.80 = 86,570.16 : x
  2. Step 2: Convert to fraction form
    155,481.36/214,561.80 = 86,570.16/x
  3. Step 3: Cross multiply
    155,481.36x = 214,561.80 × 86,570.16
  4. Step 4: Simplify right side
    155,481.36x = 18,574,649,355.89
  5. Step 5: Solve for x
    x = 18,574,649,355.89/155,481.36
  6. Step 6: Final answer
    x = 119,465.44

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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.