Home / 86,667,949.40-130,035,101.70-85,307,667.80

Finding the Fourth Proportional to 86,667,949.40, 130,035,101.70 and 85,307,667.80

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Solution

The fourth proportional to 86,667,949.40, 130,035,101.70 and 85,307,667.80 is: 127,994,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667,949.40 : 130,035,101.70 = 85,307,667.80 : x
  2. Step 2: Convert to fraction form
    86,667,949.40/130,035,101.70 = 85,307,667.80/x
  3. Step 3: Cross multiply
    86,667,949.40x = 130,035,101.70 × 85,307,667.80
  4. Step 4: Simplify right side
    86,667,949.40x = 11,092,991,258,162,816
  5. Step 5: Solve for x
    x = 11,092,991,258,162,816/86,667,949.40
  6. Step 6: Final answer
    x = 127,994,158.57

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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.