Home / 102,854.12-142,000.62-67,106.12

Finding the Fourth Proportional to 102,854.12, 142,000.62 and 67,106.12

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Solution

The fourth proportional to 102,854.12, 142,000.62 and 67,106.12 is: 92,646.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,854.12 : 142,000.62 = 67,106.12 : x
  2. Step 2: Convert to fraction form
    102,854.12/142,000.62 = 67,106.12/x
  3. Step 3: Cross multiply
    102,854.12x = 142,000.62 × 67,106.12
  4. Step 4: Simplify right side
    102,854.12x = 9,529,110,645.79
  5. Step 5: Solve for x
    x = 9,529,110,645.79/102,854.12
  6. Step 6: Final answer
    x = 92,646.85

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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.