Home / 165,978,273.40-248,967,410.10-85,356,705.40

Finding the Fourth Proportional to 165,978,273.40, 248,967,410.10 and 85,356,705.40

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Solution

The fourth proportional to 165,978,273.40, 248,967,410.10 and 85,356,705.40 is: 128,035,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,978,273.40 : 248,967,410.10 = 85,356,705.40 : x
  2. Step 2: Convert to fraction form
    165,978,273.40/248,967,410.10 = 85,356,705.40/x
  3. Step 3: Cross multiply
    165,978,273.40x = 248,967,410.10 × 85,356,705.40
  4. Step 4: Simplify right side
    165,978,273.40x = 21,251,037,878,106,684
  5. Step 5: Solve for x
    x = 21,251,037,878,106,684/165,978,273.40
  6. Step 6: Final answer
    x = 128,035,058.10

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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.