Home / 157,430.91-217,131.80-100,847.55

Finding the Fourth Proportional to 157,430.91, 217,131.80 and 100,847.55

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Solution

The fourth proportional to 157,430.91, 217,131.80 and 100,847.55 is: 139,090.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,430.91 : 217,131.80 = 100,847.55 : x
  2. Step 2: Convert to fraction form
    157,430.91/217,131.80 = 100,847.55/x
  3. Step 3: Cross multiply
    157,430.91x = 217,131.80 × 100,847.55
  4. Step 4: Simplify right side
    157,430.91x = 21,897,209,552.85
  5. Step 5: Solve for x
    x = 21,897,209,552.85/157,430.91
  6. Step 6: Final answer
    x = 139,090.92

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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.