Home / 139,549,688.70-209,324,533.05-90,763,404.90

Finding the Fourth Proportional to 139,549,688.70, 209,324,533.05 and 90,763,404.90

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Solution

The fourth proportional to 139,549,688.70, 209,324,533.05 and 90,763,404.90 is: 136,145,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,549,688.70 : 209,324,533.05 = 90,763,404.90 : x
  2. Step 2: Convert to fraction form
    139,549,688.70/209,324,533.05 = 90,763,404.90/x
  3. Step 3: Cross multiply
    139,549,688.70x = 209,324,533.05 × 90,763,404.90
  4. Step 4: Simplify right side
    139,549,688.70x = 18,999,007,348,720,584
  5. Step 5: Solve for x
    x = 18,999,007,348,720,584/139,549,688.70
  6. Step 6: Final answer
    x = 136,145,107.35

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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.