Home / 139,307,610.40-208,961,921.12-42,264,141.28

Finding the Fourth Proportional to 139,307,610.40, 208,961,921.12 and 42,264,141.28

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Solution

The fourth proportional to 139,307,610.40, 208,961,921.12 and 42,264,141.28 is: 63,396,365.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,307,610.40 : 208,961,921.12 = 42,264,141.28 : x
  2. Step 2: Convert to fraction form
    139,307,610.40/208,961,921.12 = 42,264,141.28/x
  3. Step 3: Cross multiply
    139,307,610.40x = 208,961,921.12 × 42,264,141.28
  4. Step 4: Simplify right side
    139,307,610.40x = 8,831,596,156,355,896
  5. Step 5: Solve for x
    x = 8,831,596,156,355,896/139,307,610.40
  6. Step 6: Final answer
    x = 63,396,365.29

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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.