Home / 213,814.12-295,068.30-138,493.72

Finding the Fourth Proportional to 213,814.12, 295,068.30 and 138,493.72

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Solution

The fourth proportional to 213,814.12, 295,068.30 and 138,493.72 is: 191,124.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,814.12 : 295,068.30 = 138,493.72 : x
  2. Step 2: Convert to fraction form
    213,814.12/295,068.30 = 138,493.72/x
  3. Step 3: Cross multiply
    213,814.12x = 295,068.30 × 138,493.72
  4. Step 4: Simplify right side
    213,814.12x = 40,865,106,521.08
  5. Step 5: Solve for x
    x = 40,865,106,521.08/213,814.12
  6. Step 6: Final answer
    x = 191,124.45

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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.