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Finding the Fourth Proportional to 123,672,003.80, 185,508,005.70 and 42,892,971.80

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Solution

The fourth proportional to 123,672,003.80, 185,508,005.70 and 42,892,971.80 is: 64,339,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,672,003.80 : 185,508,005.70 = 42,892,971.80 : x
  2. Step 2: Convert to fraction form
    123,672,003.80/185,508,005.70 = 42,892,971.80/x
  3. Step 3: Cross multiply
    123,672,003.80x = 185,508,005.70 × 42,892,971.80
  4. Step 4: Simplify right side
    123,672,003.80x = 7,956,989,657,164,338
  5. Step 5: Solve for x
    x = 7,956,989,657,164,338/123,672,003.80
  6. Step 6: Final answer
    x = 64,339,457.70

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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.