Home / 128,035.56-176,688.96-71,447.04

Finding the Fourth Proportional to 128,035.56, 176,688.96 and 71,447.04

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Solution

The fourth proportional to 128,035.56, 176,688.96 and 71,447.04 is: 98,596.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,035.56 : 176,688.96 = 71,447.04 : x
  2. Step 2: Convert to fraction form
    128,035.56/176,688.96 = 71,447.04/x
  3. Step 3: Cross multiply
    128,035.56x = 176,688.96 × 71,447.04
  4. Step 4: Simplify right side
    128,035.56x = 12,623,903,192.68
  5. Step 5: Solve for x
    x = 12,623,903,192.68/128,035.56
  6. Step 6: Final answer
    x = 98,596.85

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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.