Home / 101,987,360.70-152,981,041.05-81,831,968.70

Finding the Fourth Proportional to 101,987,360.70, 152,981,041.05 and 81,831,968.70

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Solution

The fourth proportional to 101,987,360.70, 152,981,041.05 and 81,831,968.70 is: 122,747,953.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,987,360.70 : 152,981,041.05 = 81,831,968.70 : x
  2. Step 2: Convert to fraction form
    101,987,360.70/152,981,041.05 = 81,831,968.70/x
  3. Step 3: Cross multiply
    101,987,360.70x = 152,981,041.05 × 81,831,968.70
  4. Step 4: Simplify right side
    101,987,360.70x = 12,518,739,762,897,016
  5. Step 5: Solve for x
    x = 12,518,739,762,897,016/101,987,360.70
  6. Step 6: Final answer
    x = 122,747,953.05

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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.