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Finding the Fourth Proportional to 157,135.01, 216,846.32 and 85,513.46

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Solution

The fourth proportional to 157,135.01, 216,846.32 and 85,513.46 is: 118,008.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,135.01 : 216,846.32 = 85,513.46 : x
  2. Step 2: Convert to fraction form
    157,135.01/216,846.32 = 85,513.46/x
  3. Step 3: Cross multiply
    157,135.01x = 216,846.32 × 85,513.46
  4. Step 4: Simplify right side
    157,135.01x = 18,543,277,599.67
  5. Step 5: Solve for x
    x = 18,543,277,599.67/157,135.01
  6. Step 6: Final answer
    x = 118,008.57

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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.