Home / 212,326.50-318,538.96-72,085.13

Finding the Fourth Proportional to 212,326.50, 318,538.96 and 72,085.13

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Solution

The fourth proportional to 212,326.50, 318,538.96 and 72,085.13 is: 108,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,326.50 : 318,538.96 = 72,085.13 : x
  2. Step 2: Convert to fraction form
    212,326.50/318,538.96 = 72,085.13/x
  3. Step 3: Cross multiply
    212,326.50x = 318,538.96 × 72,085.13
  4. Step 4: Simplify right side
    212,326.50x = 22,961,922,341.66
  5. Step 5: Solve for x
    x = 22,961,922,341.66/212,326.50
  6. Step 6: Final answer
    x = 108,144.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.