Home / 128,402.29-177,200-70,262.93

Finding the Fourth Proportional to 128,402.29, 177,200 and 70,262.93

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Solution

The fourth proportional to 128,402.29, 177,200 and 70,262.93 is: 96,965.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,402.29 : 177,200 = 70,262.93 : x
  2. Step 2: Convert to fraction form
    128,402.29/177,200 = 70,262.93/x
  3. Step 3: Cross multiply
    128,402.29x = 177,200 × 70,262.93
  4. Step 4: Simplify right side
    128,402.29x = 12,450,591,196.00
  5. Step 5: Solve for x
    x = 12,450,591,196.00/128,402.29
  6. Step 6: Final answer
    x = 96,965.50

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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.