Home / 111,639.48-154,034.70-66,298.44

Finding the Fourth Proportional to 111,639.48, 154,034.70 and 66,298.44

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Solution

The fourth proportional to 111,639.48, 154,034.70 and 66,298.44 is: 91,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,639.48 : 154,034.70 = 66,298.44 : x
  2. Step 2: Convert to fraction form
    111,639.48/154,034.70 = 66,298.44/x
  3. Step 3: Cross multiply
    111,639.48x = 154,034.70 × 66,298.44
  4. Step 4: Simplify right side
    111,639.48x = 10,212,260,315.87
  5. Step 5: Solve for x
    x = 10,212,260,315.87/111,639.48
  6. Step 6: Final answer
    x = 91,475.35

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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.