Home / 158,728.88-219,050.12-87,111.45

Finding the Fourth Proportional to 158,728.88, 219,050.12 and 87,111.45

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Solution

The fourth proportional to 158,728.88, 219,050.12 and 87,111.45 is: 120,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,728.88 : 219,050.12 = 87,111.45 : x
  2. Step 2: Convert to fraction form
    158,728.88/219,050.12 = 87,111.45/x
  3. Step 3: Cross multiply
    158,728.88x = 219,050.12 × 87,111.45
  4. Step 4: Simplify right side
    158,728.88x = 19,081,773,793.65
  5. Step 5: Solve for x
    x = 19,081,773,793.65/158,728.88
  6. Step 6: Final answer
    x = 120,216.14

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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.