Home / 216,787,739.40-325,074,008.70-78,607,830.60

Finding the Fourth Proportional to 216,787,739.40, 325,074,008.70 and 78,607,830.60

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Solution

The fourth proportional to 216,787,739.40, 325,074,008.70 and 78,607,830.60 is: 117,872,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,787,739.40 : 325,074,008.70 = 78,607,830.60 : x
  2. Step 2: Convert to fraction form
    216,787,739.40/325,074,008.70 = 78,607,830.60/x
  3. Step 3: Cross multiply
    216,787,739.40x = 325,074,008.70 × 78,607,830.60
  4. Step 4: Simplify right side
    216,787,739.40x = 25,553,362,608,352,524
  5. Step 5: Solve for x
    x = 25,553,362,608,352,524/216,787,739.40
  6. Step 6: Final answer
    x = 117,872,729.70

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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.