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Finding the Fourth Proportional to 207,758.16, 286,642.50 and 127,101.60

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Solution

The fourth proportional to 207,758.16, 286,642.50 and 127,101.60 is: 175,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,758.16 : 286,642.50 = 127,101.60 : x
  2. Step 2: Convert to fraction form
    207,758.16/286,642.50 = 127,101.60/x
  3. Step 3: Cross multiply
    207,758.16x = 286,642.50 × 127,101.60
  4. Step 4: Simplify right side
    207,758.16x = 36,432,720,378
  5. Step 5: Solve for x
    x = 36,432,720,378/207,758.16
  6. Step 6: Final answer
    x = 175,361.20

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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.