Home / 158,018.32-218,069.16-86,401.36

Finding the Fourth Proportional to 158,018.32, 218,069.16 and 86,401.36

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Solution

The fourth proportional to 158,018.32, 218,069.16 and 86,401.36 is: 119,236.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,018.32 : 218,069.16 = 86,401.36 : x
  2. Step 2: Convert to fraction form
    158,018.32/218,069.16 = 86,401.36/x
  3. Step 3: Cross multiply
    158,018.32x = 218,069.16 × 86,401.36
  4. Step 4: Simplify right side
    158,018.32x = 18,841,471,998.06
  5. Step 5: Solve for x
    x = 18,841,471,998.06/158,018.32
  6. Step 6: Final answer
    x = 119,236.00

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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.