Home / 157,545.90-217,434.24-100,190.64

Finding the Fourth Proportional to 157,545.90, 217,434.24 and 100,190.64

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Solution

The fourth proportional to 157,545.90, 217,434.24 and 100,190.64 is: 138,276.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,545.90 : 217,434.24 = 100,190.64 : x
  2. Step 2: Convert to fraction form
    157,545.90/217,434.24 = 100,190.64/x
  3. Step 3: Cross multiply
    157,545.90x = 217,434.24 × 100,190.64
  4. Step 4: Simplify right side
    157,545.90x = 21,784,875,663.51
  5. Step 5: Solve for x
    x = 21,784,875,663.51/157,545.90
  6. Step 6: Final answer
    x = 138,276.37

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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.