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Finding the Fourth Proportional to 157,242.86, 216,995.21 and 85,622.85

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Solution

The fourth proportional to 157,242.86, 216,995.21 and 85,622.85 is: 118,159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,242.86 : 216,995.21 = 85,622.85 : x
  2. Step 2: Convert to fraction form
    157,242.86/216,995.21 = 85,622.85/x
  3. Step 3: Cross multiply
    157,242.86x = 216,995.21 × 85,622.85
  4. Step 4: Simplify right side
    157,242.86x = 18,579,747,888.43
  5. Step 5: Solve for x
    x = 18,579,747,888.43/157,242.86
  6. Step 6: Final answer
    x = 118,159.57

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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.