Home / 158,317.10-218,470.06-86,697.51

Finding the Fourth Proportional to 158,317.10, 218,470.06 and 86,697.51

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Solution

The fourth proportional to 158,317.10, 218,470.06 and 86,697.51 is: 119,638.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,317.10 : 218,470.06 = 86,697.51 : x
  2. Step 2: Convert to fraction form
    158,317.10/218,470.06 = 86,697.51/x
  3. Step 3: Cross multiply
    158,317.10x = 218,470.06 × 86,697.51
  4. Step 4: Simplify right side
    158,317.10x = 18,940,810,211.55
  5. Step 5: Solve for x
    x = 18,940,810,211.55/158,317.10
  6. Step 6: Final answer
    x = 119,638.44

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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.