Home / 128,253-176,989.14-71,664.38

Finding the Fourth Proportional to 128,253, 176,989.14 and 71,664.38

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Solution

The fourth proportional to 128,253, 176,989.14 and 71,664.38 is: 98,896.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,253 : 176,989.14 = 71,664.38 : x
  2. Step 2: Convert to fraction form
    128,253/176,989.14 = 71,664.38/x
  3. Step 3: Cross multiply
    128,253x = 176,989.14 × 71,664.38
  4. Step 4: Simplify right side
    128,253x = 12,683,816,984.83
  5. Step 5: Solve for x
    x = 12,683,816,984.83/128,253
  6. Step 6: Final answer
    x = 98,896.84

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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.