Home / 157,983.10-218,016.69-86,363.64

Finding the Fourth Proportional to 157,983.10, 218,016.69 and 86,363.64

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Solution

The fourth proportional to 157,983.10, 218,016.69 and 86,363.64 is: 119,181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,983.10 : 218,016.69 = 86,363.64 : x
  2. Step 2: Convert to fraction form
    157,983.10/218,016.69 = 86,363.64/x
  3. Step 3: Cross multiply
    157,983.10x = 218,016.69 × 86,363.64
  4. Step 4: Simplify right side
    157,983.10x = 18,828,714,929.15
  5. Step 5: Solve for x
    x = 18,828,714,929.15/157,983.10
  6. Step 6: Final answer
    x = 119,181.83

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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.