Home / 149,201.40-205,900.55-81,220.32

Finding the Fourth Proportional to 149,201.40, 205,900.55 and 81,220.32

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Solution

The fourth proportional to 149,201.40, 205,900.55 and 81,220.32 is: 112,085.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,201.40 : 205,900.55 = 81,220.32 : x
  2. Step 2: Convert to fraction form
    149,201.40/205,900.55 = 81,220.32/x
  3. Step 3: Cross multiply
    149,201.40x = 205,900.55 × 81,220.32
  4. Step 4: Simplify right side
    149,201.40x = 16,723,308,153.07
  5. Step 5: Solve for x
    x = 16,723,308,153.07/149,201.40
  6. Step 6: Final answer
    x = 112,085.46

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1.5x scale

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.