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Finding the Fourth Proportional to 157,393, 217,211.46 and 90,329.32

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Solution

The fourth proportional to 157,393, 217,211.46 and 90,329.32 is: 124,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,393 : 217,211.46 = 90,329.32 : x
  2. Step 2: Convert to fraction form
    157,393/217,211.46 = 90,329.32/x
  3. Step 3: Cross multiply
    157,393x = 217,211.46 × 90,329.32
  4. Step 4: Simplify right side
    157,393x = 19,620,563,478.01
  5. Step 5: Solve for x
    x = 19,620,563,478.01/157,393
  6. Step 6: Final answer
    x = 124,659.70

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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.