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Finding the Fourth Proportional to 156,275.03, 215,659.34 and 84,655.34

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Solution

The fourth proportional to 156,275.03, 215,659.34 and 84,655.34 is: 116,824.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,275.03 : 215,659.34 = 84,655.34 : x
  2. Step 2: Convert to fraction form
    156,275.03/215,659.34 = 84,655.34/x
  3. Step 3: Cross multiply
    156,275.03x = 215,659.34 × 84,655.34
  4. Step 4: Simplify right side
    156,275.03x = 18,256,714,376.48
  5. Step 5: Solve for x
    x = 18,256,714,376.48/156,275.03
  6. Step 6: Final answer
    x = 116,824.26

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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.