Home / 103,420,916.96-142,721,849.68-57,012,835.36

Finding the Fourth Proportional to 103,420,916.96, 142,721,849.68 and 57,012,835.36

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Solution

The fourth proportional to 103,420,916.96, 142,721,849.68 and 57,012,835.36 is: 78,678,255.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,420,916.96 : 142,721,849.68 = 57,012,835.36 : x
  2. Step 2: Convert to fraction form
    103,420,916.96/142,721,849.68 = 57,012,835.36/x
  3. Step 3: Cross multiply
    103,420,916.96x = 142,721,849.68 × 57,012,835.36
  4. Step 4: Simplify right side
    103,420,916.96x = 8,136,977,318,080,509
  5. Step 5: Solve for x
    x = 8,136,977,318,080,509/103,420,916.96
  6. Step 6: Final answer
    x = 78,678,255.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.