Home / 120,071.48-165,756.50-77,115.08

Finding the Fourth Proportional to 120,071.48, 165,756.50 and 77,115.08

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Solution

The fourth proportional to 120,071.48, 165,756.50 and 77,115.08 is: 106,455.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,071.48 : 165,756.50 = 77,115.08 : x
  2. Step 2: Convert to fraction form
    120,071.48/165,756.50 = 77,115.08/x
  3. Step 3: Cross multiply
    120,071.48x = 165,756.50 × 77,115.08
  4. Step 4: Simplify right side
    120,071.48x = 12,782,325,758.02
  5. Step 5: Solve for x
    x = 12,782,325,758.02/120,071.48
  6. Step 6: Final answer
    x = 106,455.97

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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.