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Finding the Fourth Proportional to 141,804.70, 212,655.85 and 71,660.70

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Solution

The fourth proportional to 141,804.70, 212,655.85 and 71,660.70 is: 107,465.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,804.70 : 212,655.85 = 71,660.70 : x
  2. Step 2: Convert to fraction form
    141,804.70/212,655.85 = 71,660.70/x
  3. Step 3: Cross multiply
    141,804.70x = 212,655.85 × 71,660.70
  4. Step 4: Simplify right side
    141,804.70x = 15,239,067,070.10
  5. Step 5: Solve for x
    x = 15,239,067,070.10/141,804.70
  6. Step 6: Final answer
    x = 107,465.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.