Home / 210,149,705.60-314,951,134.86-85,507,077.45

Finding the Fourth Proportional to 210,149,705.60, 314,951,134.86 and 85,507,077.45

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Solution

The fourth proportional to 210,149,705.60, 314,951,134.86 and 85,507,077.45 is: 128,149,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,149,705.60 : 314,951,134.86 = 85,507,077.45 : x
  2. Step 2: Convert to fraction form
    210,149,705.60/314,951,134.86 = 85,507,077.45/x
  3. Step 3: Cross multiply
    210,149,705.60x = 314,951,134.86 × 85,507,077.45
  4. Step 4: Simplify right side
    210,149,705.60x = 26,930,551,081,439,416
  5. Step 5: Solve for x
    x = 26,930,551,081,439,416/210,149,705.60
  6. Step 6: Final answer
    x = 128,149,363.83

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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.