Home / 156,053.06-215,351.69-84,431.51

Finding the Fourth Proportional to 156,053.06, 215,351.69 and 84,431.51

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Solution

The fourth proportional to 156,053.06, 215,351.69 and 84,431.51 is: 116,514.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,053.06 : 215,351.69 = 84,431.51 : x
  2. Step 2: Convert to fraction form
    156,053.06/215,351.69 = 84,431.51/x
  3. Step 3: Cross multiply
    156,053.06x = 215,351.69 × 84,431.51
  4. Step 4: Simplify right side
    156,053.06x = 18,182,466,868.84
  5. Step 5: Solve for x
    x = 18,182,466,868.84/156,053.06
  6. Step 6: Final answer
    x = 116,514.65

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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.