Home / 128,599.07-177,513.30-104,684.22

Finding the Fourth Proportional to 128,599.07, 177,513.30 and 104,684.22

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Solution

The fourth proportional to 128,599.07, 177,513.30 and 104,684.22 is: 144,502.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,599.07 : 177,513.30 = 104,684.22 : x
  2. Step 2: Convert to fraction form
    128,599.07/177,513.30 = 104,684.22/x
  3. Step 3: Cross multiply
    128,599.07x = 177,513.30 × 104,684.22
  4. Step 4: Simplify right side
    128,599.07x = 18,582,841,401.34
  5. Step 5: Solve for x
    x = 18,582,841,401.34/128,599.07
  6. Step 6: Final answer
    x = 144,502.15

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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.