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Finding the Fourth Proportional to 95,893.40, 143,840.10 and 78,397.40

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Solution

The fourth proportional to 95,893.40, 143,840.10 and 78,397.40 is: 117,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,893.40 : 143,840.10 = 78,397.40 : x
  2. Step 2: Convert to fraction form
    95,893.40/143,840.10 = 78,397.40/x
  3. Step 3: Cross multiply
    95,893.40x = 143,840.10 × 78,397.40
  4. Step 4: Simplify right side
    95,893.40x = 11,276,689,855.74
  5. Step 5: Solve for x
    x = 11,276,689,855.74/95,893.40
  6. Step 6: Final answer
    x = 117,596.10

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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.