Home / 110,667,778.40-166,001,667.60-78,356,165.60

Finding the Fourth Proportional to 110,667,778.40, 166,001,667.60 and 78,356,165.60

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Solution

The fourth proportional to 110,667,778.40, 166,001,667.60 and 78,356,165.60 is: 117,534,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,667,778.40 : 166,001,667.60 = 78,356,165.60 : x
  2. Step 2: Convert to fraction form
    110,667,778.40/166,001,667.60 = 78,356,165.60/x
  3. Step 3: Cross multiply
    110,667,778.40x = 166,001,667.60 × 78,356,165.60
  4. Step 4: Simplify right side
    110,667,778.40x = 13,007,254,156,341,754
  5. Step 5: Solve for x
    x = 13,007,254,156,341,754/110,667,778.40
  6. Step 6: Final answer
    x = 117,534,248.40

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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.