Home / 101,129,390.20-139,507,144.32-61,426,355.68

Finding the Fourth Proportional to 101,129,390.20, 139,507,144.32 and 61,426,355.68

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Solution

The fourth proportional to 101,129,390.20, 139,507,144.32 and 61,426,355.68 is: 84,737,141.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,129,390.20 : 139,507,144.32 = 61,426,355.68 : x
  2. Step 2: Convert to fraction form
    101,129,390.20/139,507,144.32 = 61,426,355.68/x
  3. Step 3: Cross multiply
    101,129,390.20x = 139,507,144.32 × 61,426,355.68
  4. Step 4: Simplify right side
    101,129,390.20x = 8,569,415,466,901,411
  5. Step 5: Solve for x
    x = 8,569,415,466,901,411/101,129,390.20
  6. Step 6: Final answer
    x = 84,737,141.69

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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.