Home / 154,285.41-212,903.85-86,290.61

Finding the Fourth Proportional to 154,285.41, 212,903.85 and 86,290.61

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Solution

The fourth proportional to 154,285.41, 212,903.85 and 86,290.61 is: 119,075.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,285.41 : 212,903.85 = 86,290.61 : x
  2. Step 2: Convert to fraction form
    154,285.41/212,903.85 = 86,290.61/x
  3. Step 3: Cross multiply
    154,285.41x = 212,903.85 × 86,290.61
  4. Step 4: Simplify right side
    154,285.41x = 18,371,602,023.33
  5. Step 5: Solve for x
    x = 18,371,602,023.33/154,285.41
  6. Step 6: Final answer
    x = 119,075.43

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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.