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Finding the Fourth Proportional to 156,551.20, 216,040.48 and 84,931.20

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Solution

The fourth proportional to 156,551.20, 216,040.48 and 84,931.20 is: 117,204.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,551.20 : 216,040.48 = 84,931.20 : x
  2. Step 2: Convert to fraction form
    156,551.20/216,040.48 = 84,931.20/x
  3. Step 3: Cross multiply
    156,551.20x = 216,040.48 × 84,931.20
  4. Step 4: Simplify right side
    156,551.20x = 18,348,577,214.98
  5. Step 5: Solve for x
    x = 18,348,577,214.98/156,551.20
  6. Step 6: Final answer
    x = 117,204.96

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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.