Home / 81,350.11-122,111.43-72,050.50

Finding the Fourth Proportional to 81,350.11, 122,111.43 and 72,050.50

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Solution

The fourth proportional to 81,350.11, 122,111.43 and 72,050.50 is: 108,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350.11 : 122,111.43 = 72,050.50 : x
  2. Step 2: Convert to fraction form
    81,350.11/122,111.43 = 72,050.50/x
  3. Step 3: Cross multiply
    81,350.11x = 122,111.43 × 72,050.50
  4. Step 4: Simplify right side
    81,350.11x = 8,798,189,587.22
  5. Step 5: Solve for x
    x = 8,798,189,587.22/81,350.11
  6. Step 6: Final answer
    x = 108,152.15

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1.5x scale

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.