Home / 89,095,123.80-133,642,685.70-78,324,586.20

Finding the Fourth Proportional to 89,095,123.80, 133,642,685.70 and 78,324,586.20

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Solution

The fourth proportional to 89,095,123.80, 133,642,685.70 and 78,324,586.20 is: 117,486,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,095,123.80 : 133,642,685.70 = 78,324,586.20 : x
  2. Step 2: Convert to fraction form
    89,095,123.80/133,642,685.70 = 78,324,586.20/x
  3. Step 3: Cross multiply
    89,095,123.80x = 133,642,685.70 × 78,324,586.20
  4. Step 4: Simplify right side
    89,095,123.80x = 10,467,508,056,109,158
  5. Step 5: Solve for x
    x = 10,467,508,056,109,158/89,095,123.80
  6. Step 6: Final answer
    x = 117,486,879.30

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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.