Home / 213,816.12-295,071.06-138,495.72

Finding the Fourth Proportional to 213,816.12, 295,071.06 and 138,495.72

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Solution

The fourth proportional to 213,816.12, 295,071.06 and 138,495.72 is: 191,127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,816.12 : 295,071.06 = 138,495.72 : x
  2. Step 2: Convert to fraction form
    213,816.12/295,071.06 = 138,495.72/x
  3. Step 3: Cross multiply
    213,816.12x = 295,071.06 × 138,495.72
  4. Step 4: Simplify right side
    213,816.12x = 40,866,078,905.86
  5. Step 5: Solve for x
    x = 40,866,078,905.86/213,816.12
  6. Step 6: Final answer
    x = 191,127.21

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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.