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Finding the Fourth Proportional to 141,813.60, 212,720.40 and 71,683.80

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Solution

The fourth proportional to 141,813.60, 212,720.40 and 71,683.80 is: 107,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,813.60 : 212,720.40 = 71,683.80 : x
  2. Step 2: Convert to fraction form
    141,813.60/212,720.40 = 71,683.80/x
  3. Step 3: Cross multiply
    141,813.60x = 212,720.40 × 71,683.80
  4. Step 4: Simplify right side
    141,813.60x = 15,248,606,609.52
  5. Step 5: Solve for x
    x = 15,248,606,609.52/141,813.60
  6. Step 6: Final answer
    x = 107,525.70

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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.