Home / 120,107.18-165,640.52-99,656.84

Finding the Fourth Proportional to 120,107.18, 165,640.52 and 99,656.84

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Solution

The fourth proportional to 120,107.18, 165,640.52 and 99,656.84 is: 137,437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,107.18 : 165,640.52 = 99,656.84 : x
  2. Step 2: Convert to fraction form
    120,107.18/165,640.52 = 99,656.84/x
  3. Step 3: Cross multiply
    120,107.18x = 165,640.52 × 99,656.84
  4. Step 4: Simplify right side
    120,107.18x = 16,507,211,462.40
  5. Step 5: Solve for x
    x = 16,507,211,462.40/120,107.18
  6. Step 6: Final answer
    x = 137,437.34

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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.