Home / 128,573.56-177,416.36-74,125.13

Finding the Fourth Proportional to 128,573.56, 177,416.36 and 74,125.13

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Solution

The fourth proportional to 128,573.56, 177,416.36 and 74,125.13 is: 102,283.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,573.56 : 177,416.36 = 74,125.13 : x
  2. Step 2: Convert to fraction form
    128,573.56/177,416.36 = 74,125.13/x
  3. Step 3: Cross multiply
    128,573.56x = 177,416.36 × 74,125.13
  4. Step 4: Simplify right side
    128,573.56x = 13,151,009,769.39
  5. Step 5: Solve for x
    x = 13,151,009,769.39/128,573.56
  6. Step 6: Final answer
    x = 102,283.93

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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.