Home / 154,015.98-212,535.83-86,031.87

Finding the Fourth Proportional to 154,015.98, 212,535.83 and 86,031.87

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Solution

The fourth proportional to 154,015.98, 212,535.83 and 86,031.87 is: 118,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,015.98 : 212,535.83 = 86,031.87 : x
  2. Step 2: Convert to fraction form
    154,015.98/212,535.83 = 86,031.87/x
  3. Step 3: Cross multiply
    154,015.98x = 212,535.83 × 86,031.87
  4. Step 4: Simplify right side
    154,015.98x = 18,284,854,466.74
  5. Step 5: Solve for x
    x = 18,284,854,466.74/154,015.98
  6. Step 6: Final answer
    x = 118,720.50

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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.