Home / 215,621.52-297,566.90-120,128.19

Finding the Fourth Proportional to 215,621.52, 297,566.90 and 120,128.19

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Solution

The fourth proportional to 215,621.52, 297,566.90 and 120,128.19 is: 165,782.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,621.52 : 297,566.90 = 120,128.19 : x
  2. Step 2: Convert to fraction form
    215,621.52/297,566.90 = 120,128.19/x
  3. Step 3: Cross multiply
    215,621.52x = 297,566.90 × 120,128.19
  4. Step 4: Simplify right side
    215,621.52x = 35,746,173,100.91
  5. Step 5: Solve for x
    x = 35,746,173,100.91/215,621.52
  6. Step 6: Final answer
    x = 165,782.03

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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.