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Finding the Fourth Proportional to 157,156.18, 216,880.13 and 85,540.84

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Solution

The fourth proportional to 157,156.18, 216,880.13 and 85,540.84 is: 118,048.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,156.18 : 216,880.13 = 85,540.84 : x
  2. Step 2: Convert to fraction form
    157,156.18/216,880.13 = 85,540.84/x
  3. Step 3: Cross multiply
    157,156.18x = 216,880.13 × 85,540.84
  4. Step 4: Simplify right side
    157,156.18x = 18,552,108,499.51
  5. Step 5: Solve for x
    x = 18,552,108,499.51/157,156.18
  6. Step 6: Final answer
    x = 118,048.86

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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.