Home / 149,285.46-206,009.73-81,300.90

Finding the Fourth Proportional to 149,285.46, 206,009.73 and 81,300.90

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Solution

The fourth proportional to 149,285.46, 206,009.73 and 81,300.90 is: 112,192.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,285.46 : 206,009.73 = 81,300.90 : x
  2. Step 2: Convert to fraction form
    149,285.46/206,009.73 = 81,300.90/x
  3. Step 3: Cross multiply
    149,285.46x = 206,009.73 × 81,300.90
  4. Step 4: Simplify right side
    149,285.46x = 16,748,776,457.76
  5. Step 5: Solve for x
    x = 16,748,776,457.76/149,285.46
  6. Step 6: Final answer
    x = 112,192.95

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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.