Home / 154,876.47-213,725.43-86,887.77

Finding the Fourth Proportional to 154,876.47, 213,725.43 and 86,887.77

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Solution

The fourth proportional to 154,876.47, 213,725.43 and 86,887.77 is: 119,902.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,876.47 : 213,725.43 = 86,887.77 : x
  2. Step 2: Convert to fraction form
    154,876.47/213,725.43 = 86,887.77/x
  3. Step 3: Cross multiply
    154,876.47x = 213,725.43 × 86,887.77
  4. Step 4: Simplify right side
    154,876.47x = 18,570,126,004.99
  5. Step 5: Solve for x
    x = 18,570,126,004.99/154,876.47
  6. Step 6: Final answer
    x = 119,902.82

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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.