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Finding the Fourth Proportional to 156,615.24, 216,129.72 and 84,995.24

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Solution

The fourth proportional to 156,615.24, 216,129.72 and 84,995.24 is: 117,293.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,615.24 : 216,129.72 = 84,995.24 : x
  2. Step 2: Convert to fraction form
    156,615.24/216,129.72 = 84,995.24/x
  3. Step 3: Cross multiply
    156,615.24x = 216,129.72 × 84,995.24
  4. Step 4: Simplify right side
    156,615.24x = 18,369,997,422.53
  5. Step 5: Solve for x
    x = 18,369,997,422.53/156,615.24
  6. Step 6: Final answer
    x = 117,293.81

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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.