Home / 139,909,545.52-193,075,515.48-78,033,891.76

Finding the Fourth Proportional to 139,909,545.52, 193,075,515.48 and 78,033,891.76

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Solution

The fourth proportional to 139,909,545.52, 193,075,515.48 and 78,033,891.76 is: 107,686,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,909,545.52 : 193,075,515.48 = 78,033,891.76 : x
  2. Step 2: Convert to fraction form
    139,909,545.52/193,075,515.48 = 78,033,891.76/x
  3. Step 3: Cross multiply
    139,909,545.52x = 193,075,515.48 × 78,033,891.76
  4. Step 4: Simplify right side
    139,909,545.52x = 15,066,433,876,472,524
  5. Step 5: Solve for x
    x = 15,066,433,876,472,524/139,909,545.52
  6. Step 6: Final answer
    x = 107,686,961.75

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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.