Home / 105,377.38-145,376.64-69,087.53

Finding the Fourth Proportional to 105,377.38, 145,376.64 and 69,087.53

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Solution

The fourth proportional to 105,377.38, 145,376.64 and 69,087.53 is: 95,311.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,377.38 : 145,376.64 = 69,087.53 : x
  2. Step 2: Convert to fraction form
    105,377.38/145,376.64 = 69,087.53/x
  3. Step 3: Cross multiply
    105,377.38x = 145,376.64 × 69,087.53
  4. Step 4: Simplify right side
    105,377.38x = 10,043,713,340.74
  5. Step 5: Solve for x
    x = 10,043,713,340.74/105,377.38
  6. Step 6: Final answer
    x = 95,311.86

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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.