Home / 154,283.91-212,901.77-86,289.11

Finding the Fourth Proportional to 154,283.91, 212,901.77 and 86,289.11

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Solution

The fourth proportional to 154,283.91, 212,901.77 and 86,289.11 is: 119,073.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,283.91 : 212,901.77 = 86,289.11 : x
  2. Step 2: Convert to fraction form
    154,283.91/212,901.77 = 86,289.11/x
  3. Step 3: Cross multiply
    154,283.91x = 212,901.77 × 86,289.11
  4. Step 4: Simplify right side
    154,283.91x = 18,371,104,560.39
  5. Step 5: Solve for x
    x = 18,371,104,560.39/154,283.91
  6. Step 6: Final answer
    x = 119,073.37

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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.