Home / 210,131.78-289,980.47-119,487.75

Finding the Fourth Proportional to 210,131.78, 289,980.47 and 119,487.75

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Solution

The fourth proportional to 210,131.78, 289,980.47 and 119,487.75 is: 164,892.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,131.78 : 289,980.47 = 119,487.75 : x
  2. Step 2: Convert to fraction form
    210,131.78/289,980.47 = 119,487.75/x
  3. Step 3: Cross multiply
    210,131.78x = 289,980.47 × 119,487.75
  4. Step 4: Simplify right side
    210,131.78x = 34,649,113,904.24
  5. Step 5: Solve for x
    x = 34,649,113,904.24/210,131.78
  6. Step 6: Final answer
    x = 164,892.31

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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.