Home / 231,995,111.40-347,981,607.90-78,626,125.80

Finding the Fourth Proportional to 231,995,111.40, 347,981,607.90 and 78,626,125.80

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Solution

The fourth proportional to 231,995,111.40, 347,981,607.90 and 78,626,125.80 is: 117,935,440.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,995,111.40 : 347,981,607.90 = 78,626,125.80 : x
  2. Step 2: Convert to fraction form
    231,995,111.40/347,981,607.90 = 78,626,125.80/x
  3. Step 3: Cross multiply
    231,995,111.40x = 347,981,607.90 × 78,626,125.80
  4. Step 4: Simplify right side
    231,995,111.40x = 27,360,445,678,831,672
  5. Step 5: Solve for x
    x = 27,360,445,678,831,672/231,995,111.40
  6. Step 6: Final answer
    x = 117,935,440.59

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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.