Home / 154,015.98-212,535.82-86,031.86

Finding the Fourth Proportional to 154,015.98, 212,535.82 and 86,031.86

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Solution

The fourth proportional to 154,015.98, 212,535.82 and 86,031.86 is: 118,720.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,015.98 : 212,535.82 = 86,031.86 : x
  2. Step 2: Convert to fraction form
    154,015.98/212,535.82 = 86,031.86/x
  3. Step 3: Cross multiply
    154,015.98x = 212,535.82 × 86,031.86
  4. Step 4: Simplify right side
    154,015.98x = 18,284,851,911.23
  5. Step 5: Solve for x
    x = 18,284,851,911.23/154,015.98
  6. Step 6: Final answer
    x = 118,720.49

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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.