Home / 103,491,788.40-155,237,682.60-77,663,755.80

Finding the Fourth Proportional to 103,491,788.40, 155,237,682.60 and 77,663,755.80

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Solution

The fourth proportional to 103,491,788.40, 155,237,682.60 and 77,663,755.80 is: 116,495,633.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,491,788.40 : 155,237,682.60 = 77,663,755.80 : x
  2. Step 2: Convert to fraction form
    103,491,788.40/155,237,682.60 = 77,663,755.80/x
  3. Step 3: Cross multiply
    103,491,788.40x = 155,237,682.60 × 77,663,755.80
  4. Step 4: Simplify right side
    103,491,788.40x = 12,056,341,472,404,308
  5. Step 5: Solve for x
    x = 12,056,341,472,404,308/103,491,788.40
  6. Step 6: Final answer
    x = 116,495,633.70

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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.