Home / 155,820.30-215,032.10-84,200.34

Finding the Fourth Proportional to 155,820.30, 215,032.10 and 84,200.34

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Solution

The fourth proportional to 155,820.30, 215,032.10 and 84,200.34 is: 116,196.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,820.30 : 215,032.10 = 84,200.34 : x
  2. Step 2: Convert to fraction form
    155,820.30/215,032.10 = 84,200.34/x
  3. Step 3: Cross multiply
    155,820.30x = 215,032.10 × 84,200.34
  4. Step 4: Simplify right side
    155,820.30x = 18,105,775,930.91
  5. Step 5: Solve for x
    x = 18,105,775,930.91/155,820.30
  6. Step 6: Final answer
    x = 116,196.52

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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.