Home / 157,389.09-217,230.48-103,678.80

Finding the Fourth Proportional to 157,389.09, 217,230.48 and 103,678.80

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Solution

The fourth proportional to 157,389.09, 217,230.48 and 103,678.80 is: 143,098.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,389.09 : 217,230.48 = 103,678.80 : x
  2. Step 2: Convert to fraction form
    157,389.09/217,230.48 = 103,678.80/x
  3. Step 3: Cross multiply
    157,389.09x = 217,230.48 × 103,678.80
  4. Step 4: Simplify right side
    157,389.09x = 22,522,195,489.82
  5. Step 5: Solve for x
    x = 22,522,195,489.82/157,389.09
  6. Step 6: Final answer
    x = 143,098.84

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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.