Home / 155,938,238.87-215,196,470.26-86,324,782.28

Finding the Fourth Proportional to 155,938,238.87, 215,196,470.26 and 86,324,782.28

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Solution

The fourth proportional to 155,938,238.87, 215,196,470.26 and 86,324,782.28 is: 119,129,140.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,938,238.87 : 215,196,470.26 = 86,324,782.28 : x
  2. Step 2: Convert to fraction form
    155,938,238.87/215,196,470.26 = 86,324,782.28/x
  3. Step 3: Cross multiply
    155,938,238.87x = 215,196,470.26 × 86,324,782.28
  4. Step 4: Simplify right side
    155,938,238.87x = 18,576,788,441,327,200
  5. Step 5: Solve for x
    x = 18,576,788,441,327,200/155,938,238.87
  6. Step 6: Final answer
    x = 119,129,140.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.