Home / 210,007.05-315,010.58-121,433.55

Finding the Fourth Proportional to 210,007.05, 315,010.58 and 121,433.55

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Solution

The fourth proportional to 210,007.05, 315,010.58 and 121,433.55 is: 182,150.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,007.05 : 315,010.58 = 121,433.55 : x
  2. Step 2: Convert to fraction form
    210,007.05/315,010.58 = 121,433.55/x
  3. Step 3: Cross multiply
    210,007.05x = 315,010.58 × 121,433.55
  4. Step 4: Simplify right side
    210,007.05x = 38,252,852,409.79
  5. Step 5: Solve for x
    x = 38,252,852,409.79/210,007.05
  6. Step 6: Final answer
    x = 182,150.33

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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.