Home / 139,778,759.36-209,678,754-47,633,859.20

Finding the Fourth Proportional to 139,778,759.36, 209,678,754 and 47,633,859.20

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Solution

The fourth proportional to 139,778,759.36, 209,678,754 and 47,633,859.20 is: 71,454,406.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,778,759.36 : 209,678,754 = 47,633,859.20 : x
  2. Step 2: Convert to fraction form
    139,778,759.36/209,678,754 = 47,633,859.20/x
  3. Step 3: Cross multiply
    139,778,759.36x = 209,678,754 × 47,633,859.20
  4. Step 4: Simplify right side
    139,778,759.36x = 9,987,808,245,267,438
  5. Step 5: Solve for x
    x = 9,987,808,245,267,438/139,778,759.36
  6. Step 6: Final answer
    x = 71,454,406.17

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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.