Home / 156,029.33-215,320-84,409.34

Finding the Fourth Proportional to 156,029.33, 215,320 and 84,409.34

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Solution

The fourth proportional to 156,029.33, 215,320 and 84,409.34 is: 116,484.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,029.33 : 215,320 = 84,409.34 : x
  2. Step 2: Convert to fraction form
    156,029.33/215,320 = 84,409.34/x
  3. Step 3: Cross multiply
    156,029.33x = 215,320 × 84,409.34
  4. Step 4: Simplify right side
    156,029.33x = 18,175,018,012.20
  5. Step 5: Solve for x
    x = 18,175,018,012.20/156,029.33
  6. Step 6: Final answer
    x = 116,484.63

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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.