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Finding the Fourth Proportional to 157,620, 217,485.84 and 93,963.72

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Solution

The fourth proportional to 157,620, 217,485.84 and 93,963.72 is: 129,652.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,620 : 217,485.84 = 93,963.72 : x
  2. Step 2: Convert to fraction form
    157,620/217,485.84 = 93,963.72/x
  3. Step 3: Cross multiply
    157,620x = 217,485.84 × 93,963.72
  4. Step 4: Simplify right side
    157,620x = 20,435,778,573.72
  5. Step 5: Solve for x
    x = 20,435,778,573.72/157,620
  6. Step 6: Final answer
    x = 129,652.19

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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.