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Finding the Fourth Proportional to 156,615.96, 216,129.54 and 84,995.37

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Solution

The fourth proportional to 156,615.96, 216,129.54 and 84,995.37 is: 117,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,615.96 : 216,129.54 = 84,995.37 : x
  2. Step 2: Convert to fraction form
    156,615.96/216,129.54 = 84,995.37/x
  3. Step 3: Cross multiply
    156,615.96x = 216,129.54 × 84,995.37
  4. Step 4: Simplify right side
    156,615.96x = 18,370,010,220.23
  5. Step 5: Solve for x
    x = 18,370,010,220.23/156,615.96
  6. Step 6: Final answer
    x = 117,293.35

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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.