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Finding the Fourth Proportional to 156,615.98, 216,309.48 and 103,140.02

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Solution

The fourth proportional to 156,615.98, 216,309.48 and 103,140.02 is: 142,451.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,615.98 : 216,309.48 = 103,140.02 : x
  2. Step 2: Convert to fraction form
    156,615.98/216,309.48 = 103,140.02/x
  3. Step 3: Cross multiply
    156,615.98x = 216,309.48 × 103,140.02
  4. Step 4: Simplify right side
    156,615.98x = 22,310,164,093.39
  5. Step 5: Solve for x
    x = 22,310,164,093.39/156,615.98
  6. Step 6: Final answer
    x = 142,451.39

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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.