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Finding the Fourth Proportional to 143,798.40, 215,697.60 and 129,801.60

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Solution

The fourth proportional to 143,798.40, 215,697.60 and 129,801.60 is: 194,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,798.40 : 215,697.60 = 129,801.60 : x
  2. Step 2: Convert to fraction form
    143,798.40/215,697.60 = 129,801.60/x
  3. Step 3: Cross multiply
    143,798.40x = 215,697.60 × 129,801.60
  4. Step 4: Simplify right side
    143,798.40x = 27,997,893,596.16
  5. Step 5: Solve for x
    x = 27,997,893,596.16/143,798.40
  6. Step 6: Final answer
    x = 194,702.40

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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.