Home / 102,518.38-141,533.49-66,690.46

Finding the Fourth Proportional to 102,518.38, 141,533.49 and 66,690.46

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Solution

The fourth proportional to 102,518.38, 141,533.49 and 66,690.46 is: 92,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,518.38 : 141,533.49 = 66,690.46 : x
  2. Step 2: Convert to fraction form
    102,518.38/141,533.49 = 66,690.46/x
  3. Step 3: Cross multiply
    102,518.38x = 141,533.49 × 66,690.46
  4. Step 4: Simplify right side
    102,518.38x = 9,438,933,553.51
  5. Step 5: Solve for x
    x = 9,438,933,553.51/102,518.38
  6. Step 6: Final answer
    x = 92,070.65

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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.