Home / 154,767.15-213,602.58-86,811.57

Finding the Fourth Proportional to 154,767.15, 213,602.58 and 86,811.57

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Solution

The fourth proportional to 154,767.15, 213,602.58 and 86,811.57 is: 119,813.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,767.15 : 213,602.58 = 86,811.57 : x
  2. Step 2: Convert to fraction form
    154,767.15/213,602.58 = 86,811.57/x
  3. Step 3: Cross multiply
    154,767.15x = 213,602.58 × 86,811.57
  4. Step 4: Simplify right side
    154,767.15x = 18,543,175,325.85
  5. Step 5: Solve for x
    x = 18,543,175,325.85/154,767.15
  6. Step 6: Final answer
    x = 119,813.38

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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.