Home / 128,346.61-177,047.22-74,625.69

Finding the Fourth Proportional to 128,346.61, 177,047.22 and 74,625.69

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Solution

The fourth proportional to 128,346.61, 177,047.22 and 74,625.69 is: 102,942.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,346.61 : 177,047.22 = 74,625.69 : x
  2. Step 2: Convert to fraction form
    128,346.61/177,047.22 = 74,625.69/x
  3. Step 3: Cross multiply
    128,346.61x = 177,047.22 × 74,625.69
  4. Step 4: Simplify right side
    128,346.61x = 13,212,270,955.08
  5. Step 5: Solve for x
    x = 13,212,270,955.08/128,346.61
  6. Step 6: Final answer
    x = 102,942.11

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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.