Home / 86,667,921.40-130,035,059.70-85,307,639.80

Finding the Fourth Proportional to 86,667,921.40, 130,035,059.70 and 85,307,639.80

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Solution

The fourth proportional to 86,667,921.40, 130,035,059.70 and 85,307,639.80 is: 127,994,116.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667,921.40 : 130,035,059.70 = 85,307,639.80 : x
  2. Step 2: Convert to fraction form
    86,667,921.40/130,035,059.70 = 85,307,639.80/x
  3. Step 3: Cross multiply
    86,667,921.40x = 130,035,059.70 × 85,307,639.80
  4. Step 4: Simplify right side
    86,667,921.40x = 11,092,984,034,259,096
  5. Step 5: Solve for x
    x = 11,092,984,034,259,096/86,667,921.40
  6. Step 6: Final answer
    x = 127,994,116.57

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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.