Home / 142,441,709.20-213,886,512.60-81,975,533.20

Finding the Fourth Proportional to 142,441,709.20, 213,886,512.60 and 81,975,533.20

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Solution

The fourth proportional to 142,441,709.20, 213,886,512.60 and 81,975,533.20 is: 123,092,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,441,709.20 : 213,886,512.60 = 81,975,533.20 : x
  2. Step 2: Convert to fraction form
    142,441,709.20/213,886,512.60 = 81,975,533.20/x
  3. Step 3: Cross multiply
    142,441,709.20x = 213,886,512.60 × 81,975,533.20
  4. Step 4: Simplify right side
    142,441,709.20x = 17,533,460,914,673,518
  5. Step 5: Solve for x
    x = 17,533,460,914,673,518/142,441,709.20
  6. Step 6: Final answer
    x = 123,092,182.85

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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.