Home / 147,910.24-203,686.14-128,521

Finding the Fourth Proportional to 147,910.24, 203,686.14 and 128,521

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Solution

The fourth proportional to 147,910.24, 203,686.14 and 128,521 is: 176,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,910.24 : 203,686.14 = 128,521 : x
  2. Step 2: Convert to fraction form
    147,910.24/203,686.14 = 128,521/x
  3. Step 3: Cross multiply
    147,910.24x = 203,686.14 × 128,521
  4. Step 4: Simplify right side
    147,910.24x = 26,177,946,398.94
  5. Step 5: Solve for x
    x = 26,177,946,398.94/147,910.24
  6. Step 6: Final answer
    x = 176,985.36

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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.