Home / 120,005.40-165,548.70-77,600.28

Finding the Fourth Proportional to 120,005.40, 165,548.70 and 77,600.28

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Solution

The fourth proportional to 120,005.40, 165,548.70 and 77,600.28 is: 107,050.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,005.40 : 165,548.70 = 77,600.28 : x
  2. Step 2: Convert to fraction form
    120,005.40/165,548.70 = 77,600.28/x
  3. Step 3: Cross multiply
    120,005.40x = 165,548.70 × 77,600.28
  4. Step 4: Simplify right side
    120,005.40x = 12,846,625,473.64
  5. Step 5: Solve for x
    x = 12,846,625,473.64/120,005.40
  6. Step 6: Final answer
    x = 107,050.40

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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.