Home / 154,238.58-212,847.76-86,254.80

Finding the Fourth Proportional to 154,238.58, 212,847.76 and 86,254.80

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Solution

The fourth proportional to 154,238.58, 212,847.76 and 86,254.80 is: 119,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,238.58 : 212,847.76 = 86,254.80 : x
  2. Step 2: Convert to fraction form
    154,238.58/212,847.76 = 86,254.80/x
  3. Step 3: Cross multiply
    154,238.58x = 212,847.76 × 86,254.80
  4. Step 4: Simplify right side
    154,238.58x = 18,359,140,969.25
  5. Step 5: Solve for x
    x = 18,359,140,969.25/154,238.58
  6. Step 6: Final answer
    x = 119,030.80

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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.