Home / 154,333.24-212,990.43-86,356.66

Finding the Fourth Proportional to 154,333.24, 212,990.43 and 86,356.66

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Solution

The fourth proportional to 154,333.24, 212,990.43 and 86,356.66 is: 119,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,333.24 : 212,990.43 = 86,356.66 : x
  2. Step 2: Convert to fraction form
    154,333.24/212,990.43 = 86,356.66/x
  3. Step 3: Cross multiply
    154,333.24x = 212,990.43 × 86,356.66
  4. Step 4: Simplify right side
    154,333.24x = 18,393,142,146.76
  5. Step 5: Solve for x
    x = 18,393,142,146.76/154,333.24
  6. Step 6: Final answer
    x = 119,178.10

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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.