Home / 106,702.68-147,078.67-72,236.55

Finding the Fourth Proportional to 106,702.68, 147,078.67 and 72,236.55

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Solution

The fourth proportional to 106,702.68, 147,078.67 and 72,236.55 is: 99,570.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,702.68 : 147,078.67 = 72,236.55 : x
  2. Step 2: Convert to fraction form
    106,702.68/147,078.67 = 72,236.55/x
  3. Step 3: Cross multiply
    106,702.68x = 147,078.67 × 72,236.55
  4. Step 4: Simplify right side
    106,702.68x = 10,624,455,476.39
  5. Step 5: Solve for x
    x = 10,624,455,476.39/106,702.68
  6. Step 6: Final answer
    x = 99,570.65

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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.