Home / 86,669,135.40-130,036,880.70-85,308,853.80

Finding the Fourth Proportional to 86,669,135.40, 130,036,880.70 and 85,308,853.80

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Solution

The fourth proportional to 86,669,135.40, 130,036,880.70 and 85,308,853.80 is: 127,995,937.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,669,135.40 : 130,036,880.70 = 85,308,853.80 : x
  2. Step 2: Convert to fraction form
    86,669,135.40/130,036,880.70 = 85,308,853.80/x
  3. Step 3: Cross multiply
    86,669,135.40x = 130,036,880.70 × 85,308,853.80
  4. Step 4: Simplify right side
    86,669,135.40x = 11,093,297,244,244,342
  5. Step 5: Solve for x
    x = 11,093,297,244,244,342/86,669,135.40
  6. Step 6: Final answer
    x = 127,995,937.57

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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.