Home / 138,027.91-190,477.37-77,598.82

Finding the Fourth Proportional to 138,027.91, 190,477.37 and 77,598.82

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Solution

The fourth proportional to 138,027.91, 190,477.37 and 77,598.82 is: 107,085.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,027.91 : 190,477.37 = 77,598.82 : x
  2. Step 2: Convert to fraction form
    138,027.91/190,477.37 = 77,598.82/x
  3. Step 3: Cross multiply
    138,027.91x = 190,477.37 × 77,598.82
  4. Step 4: Simplify right side
    138,027.91x = 14,780,819,148.70
  5. Step 5: Solve for x
    x = 14,780,819,148.70/138,027.91
  6. Step 6: Final answer
    x = 107,085.73

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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.