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Finding the Fourth Proportional to 141,390.90, 198,209.70 and 141,390.90

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Solution

The fourth proportional to 141,390.90, 198,209.70 and 141,390.90 is: 198,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,390.90 : 198,209.70 = 141,390.90 : x
  2. Step 2: Convert to fraction form
    141,390.90/198,209.70 = 141,390.90/x
  3. Step 3: Cross multiply
    141,390.90x = 198,209.70 × 141,390.90
  4. Step 4: Simplify right side
    141,390.90x = 28,025,047,871.73
  5. Step 5: Solve for x
    x = 28,025,047,871.73/141,390.90
  6. Step 6: Final answer
    x = 198,209.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.