Home / 128,253.04-176,988.82-71,664.46

Finding the Fourth Proportional to 128,253.04, 176,988.82 and 71,664.46

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Solution

The fourth proportional to 128,253.04, 176,988.82 and 71,664.46 is: 98,896.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,253.04 : 176,988.82 = 71,664.46 : x
  2. Step 2: Convert to fraction form
    128,253.04/176,988.82 = 71,664.46/x
  3. Step 3: Cross multiply
    128,253.04x = 176,988.82 × 71,664.46
  4. Step 4: Simplify right side
    128,253.04x = 12,683,806,968.07
  5. Step 5: Solve for x
    x = 12,683,806,968.07/128,253.04
  6. Step 6: Final answer
    x = 98,896.74

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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.