Home / 210,857.96-291,104.28-139,445.12

Finding the Fourth Proportional to 210,857.96, 291,104.28 and 139,445.12

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Solution

The fourth proportional to 210,857.96, 291,104.28 and 139,445.12 is: 192,513.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,857.96 : 291,104.28 = 139,445.12 : x
  2. Step 2: Convert to fraction form
    210,857.96/291,104.28 = 139,445.12/x
  3. Step 3: Cross multiply
    210,857.96x = 291,104.28 × 139,445.12
  4. Step 4: Simplify right side
    210,857.96x = 40,593,071,257.11
  5. Step 5: Solve for x
    x = 40,593,071,257.11/210,857.96
  6. Step 6: Final answer
    x = 192,513.82

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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.