Home / 101,129,389.20-139,507,142.94-61,426,354.68

Finding the Fourth Proportional to 101,129,389.20, 139,507,142.94 and 61,426,354.68

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Solution

The fourth proportional to 101,129,389.20, 139,507,142.94 and 61,426,354.68 is: 84,737,140.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,129,389.20 : 139,507,142.94 = 61,426,354.68 : x
  2. Step 2: Convert to fraction form
    101,129,389.20/139,507,142.94 = 61,426,354.68/x
  3. Step 3: Cross multiply
    101,129,389.20x = 139,507,142.94 × 61,426,354.68
  4. Step 4: Simplify right side
    101,129,389.20x = 8,569,415,242,625,898
  5. Step 5: Solve for x
    x = 8,569,415,242,625,898/101,129,389.20
  6. Step 6: Final answer
    x = 84,737,140.32

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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.