Home / 213,819.12-295,075.20-138,498.72

Finding the Fourth Proportional to 213,819.12, 295,075.20 and 138,498.72

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Solution

The fourth proportional to 213,819.12, 295,075.20 and 138,498.72 is: 191,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,819.12 : 295,075.20 = 138,498.72 : x
  2. Step 2: Convert to fraction form
    213,819.12/295,075.20 = 138,498.72/x
  3. Step 3: Cross multiply
    213,819.12x = 295,075.20 × 138,498.72
  4. Step 4: Simplify right side
    213,819.12x = 40,867,537,503.74
  5. Step 5: Solve for x
    x = 40,867,537,503.74/213,819.12
  6. Step 6: Final answer
    x = 191,131.35

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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.