Home / 120,018.74-165,625.63-66,303.59

Finding the Fourth Proportional to 120,018.74, 165,625.63 and 66,303.59

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Solution

The fourth proportional to 120,018.74, 165,625.63 and 66,303.59 is: 91,498.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,018.74 : 165,625.63 = 66,303.59 : x
  2. Step 2: Convert to fraction form
    120,018.74/165,625.63 = 66,303.59/x
  3. Step 3: Cross multiply
    120,018.74x = 165,625.63 × 66,303.59
  4. Step 4: Simplify right side
    120,018.74x = 10,981,572,871.12
  5. Step 5: Solve for x
    x = 10,981,572,871.12/120,018.74
  6. Step 6: Final answer
    x = 91,498.82

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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.