Home / 139,882,777.20-209,824,165.80-99,068,108.40

Finding the Fourth Proportional to 139,882,777.20, 209,824,165.80 and 99,068,108.40

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Solution

The fourth proportional to 139,882,777.20, 209,824,165.80 and 99,068,108.40 is: 148,602,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,882,777.20 : 209,824,165.80 = 99,068,108.40 : x
  2. Step 2: Convert to fraction form
    139,882,777.20/209,824,165.80 = 99,068,108.40/x
  3. Step 3: Cross multiply
    139,882,777.20x = 209,824,165.80 × 99,068,108.40
  4. Step 4: Simplify right side
    139,882,777.20x = 20,786,883,202,413,976
  5. Step 5: Solve for x
    x = 20,786,883,202,413,976/139,882,777.20
  6. Step 6: Final answer
    x = 148,602,162.60

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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.