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Finding the Fourth Proportional to 157,697.47, 217,590.02 and 90,616.51

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Solution

The fourth proportional to 157,697.47, 217,590.02 and 90,616.51 is: 125,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,697.47 : 217,590.02 = 90,616.51 : x
  2. Step 2: Convert to fraction form
    157,697.47/217,590.02 = 90,616.51/x
  3. Step 3: Cross multiply
    157,697.47x = 217,590.02 × 90,616.51
  4. Step 4: Simplify right side
    157,697.47x = 19,717,247,565.98
  5. Step 5: Solve for x
    x = 19,717,247,565.98/157,697.47
  6. Step 6: Final answer
    x = 125,032.11

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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.