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Finding the Fourth Proportional to 159,936,751.64, 239,993,652.42 and 78,056,308.16

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Solution

The fourth proportional to 159,936,751.64, 239,993,652.42 and 78,056,308.16 is: 117,127,666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,936,751.64 : 239,993,652.42 = 78,056,308.16 : x
  2. Step 2: Convert to fraction form
    159,936,751.64/239,993,652.42 = 78,056,308.16/x
  3. Step 3: Cross multiply
    159,936,751.64x = 239,993,652.42 × 78,056,308.16
  4. Step 4: Simplify right side
    159,936,751.64x = 18,733,018,489,739,448
  5. Step 5: Solve for x
    x = 18,733,018,489,739,448/159,936,751.64
  6. Step 6: Final answer
    x = 117,127,666.39

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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.