Home / 107,981.76-162,021.84-55,428.16

Finding the Fourth Proportional to 107,981.76, 162,021.84 and 55,428.16

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Solution

The fourth proportional to 107,981.76, 162,021.84 and 55,428.16 is: 83,167.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,981.76 : 162,021.84 = 55,428.16 : x
  2. Step 2: Convert to fraction form
    107,981.76/162,021.84 = 55,428.16/x
  3. Step 3: Cross multiply
    107,981.76x = 162,021.84 × 55,428.16
  4. Step 4: Simplify right side
    107,981.76x = 8,980,572,471.01
  5. Step 5: Solve for x
    x = 8,980,572,471.01/107,981.76
  6. Step 6: Final answer
    x = 83,167.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.