Home / 154,651.32-213,370.02-86,658.84

Finding the Fourth Proportional to 154,651.32, 213,370.02 and 86,658.84

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Solution

The fourth proportional to 154,651.32, 213,370.02 and 86,658.84 is: 119,561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,651.32 : 213,370.02 = 86,658.84 : x
  2. Step 2: Convert to fraction form
    154,651.32/213,370.02 = 86,658.84/x
  3. Step 3: Cross multiply
    154,651.32x = 213,370.02 × 86,658.84
  4. Step 4: Simplify right side
    154,651.32x = 18,490,398,423.98
  5. Step 5: Solve for x
    x = 18,490,398,423.98/154,651.32
  6. Step 6: Final answer
    x = 119,561.85

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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.