Home / 138,023.65-190,468.21-77,596.83

Finding the Fourth Proportional to 138,023.65, 190,468.21 and 77,596.83

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Solution

The fourth proportional to 138,023.65, 190,468.21 and 77,596.83 is: 107,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023.65 : 190,468.21 = 77,596.83 : x
  2. Step 2: Convert to fraction form
    138,023.65/190,468.21 = 77,596.83/x
  3. Step 3: Cross multiply
    138,023.65x = 190,468.21 × 77,596.83
  4. Step 4: Simplify right side
    138,023.65x = 14,779,728,923.79
  5. Step 5: Solve for x
    x = 14,779,728,923.79/138,023.65
  6. Step 6: Final answer
    x = 107,081.13

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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.