Home / 102,786.13-141,868.56-66,913.66

Finding the Fourth Proportional to 102,786.13, 141,868.56 and 66,913.66

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Solution

The fourth proportional to 102,786.13, 141,868.56 and 66,913.66 is: 92,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,786.13 : 141,868.56 = 66,913.66 : x
  2. Step 2: Convert to fraction form
    102,786.13/141,868.56 = 66,913.66/x
  3. Step 3: Cross multiply
    102,786.13x = 141,868.56 × 66,913.66
  4. Step 4: Simplify right side
    102,786.13x = 9,492,944,588.53
  5. Step 5: Solve for x
    x = 9,492,944,588.53/102,786.13
  6. Step 6: Final answer
    x = 92,356.28

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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.