Home / 154,332.24-212,989.05-86,355.66

Finding the Fourth Proportional to 154,332.24, 212,989.05 and 86,355.66

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Solution

The fourth proportional to 154,332.24, 212,989.05 and 86,355.66 is: 119,176.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,332.24 : 212,989.05 = 86,355.66 : x
  2. Step 2: Convert to fraction form
    154,332.24/212,989.05 = 86,355.66/x
  3. Step 3: Cross multiply
    154,332.24x = 212,989.05 × 86,355.66
  4. Step 4: Simplify right side
    154,332.24x = 18,392,809,985.52
  5. Step 5: Solve for x
    x = 18,392,809,985.52/154,332.24
  6. Step 6: Final answer
    x = 119,176.72

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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.