Home / 210,146.23-315,218.53-125,931.75

Finding the Fourth Proportional to 210,146.23, 315,218.53 and 125,931.75

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Solution

The fourth proportional to 210,146.23, 315,218.53 and 125,931.75 is: 188,897.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,146.23 : 315,218.53 = 125,931.75 : x
  2. Step 2: Convert to fraction form
    210,146.23/315,218.53 = 125,931.75/x
  3. Step 3: Cross multiply
    210,146.23x = 315,218.53 × 125,931.75
  4. Step 4: Simplify right side
    210,146.23x = 39,696,021,115.33
  5. Step 5: Solve for x
    x = 39,696,021,115.33/210,146.23
  6. Step 6: Final answer
    x = 188,897.14

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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.