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Finding the Fourth Proportional to 141,772.40, 212,658.60 and 127,775.60

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Solution

The fourth proportional to 141,772.40, 212,658.60 and 127,775.60 is: 191,663.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,772.40 : 212,658.60 = 127,775.60 : x
  2. Step 2: Convert to fraction form
    141,772.40/212,658.60 = 127,775.60/x
  3. Step 3: Cross multiply
    141,772.40x = 212,658.60 × 127,775.60
  4. Step 4: Simplify right side
    141,772.40x = 27,172,580,210.16
  5. Step 5: Solve for x
    x = 27,172,580,210.16/141,772.40
  6. Step 6: Final answer
    x = 191,663.40

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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.