Home / 139,968,468.70-209,952,703.05-42,939,151.90

Finding the Fourth Proportional to 139,968,468.70, 209,952,703.05 and 42,939,151.90

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Solution

The fourth proportional to 139,968,468.70, 209,952,703.05 and 42,939,151.90 is: 64,408,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,468.70 : 209,952,703.05 = 42,939,151.90 : x
  2. Step 2: Convert to fraction form
    139,968,468.70/209,952,703.05 = 42,939,151.90/x
  3. Step 3: Cross multiply
    139,968,468.70x = 209,952,703.05 × 42,939,151.90
  4. Step 4: Simplify right side
    139,968,468.70x = 9,015,191,008,079,544
  5. Step 5: Solve for x
    x = 9,015,191,008,079,544/139,968,468.70
  6. Step 6: Final answer
    x = 64,408,727.85

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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.