Home / 112,938.05-155,841.81-65,207.18

Finding the Fourth Proportional to 112,938.05, 155,841.81 and 65,207.18

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Solution

The fourth proportional to 112,938.05, 155,841.81 and 65,207.18 is: 89,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,938.05 : 155,841.81 = 65,207.18 : x
  2. Step 2: Convert to fraction form
    112,938.05/155,841.81 = 65,207.18/x
  3. Step 3: Cross multiply
    112,938.05x = 155,841.81 × 65,207.18
  4. Step 4: Simplify right side
    112,938.05x = 10,162,004,176.99
  5. Step 5: Solve for x
    x = 10,162,004,176.99/112,938.05
  6. Step 6: Final answer
    x = 89,978.57

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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.