Home / 230,916.03-318,669.53-128,938.05

Finding the Fourth Proportional to 230,916.03, 318,669.53 and 128,938.05

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Solution

The fourth proportional to 230,916.03, 318,669.53 and 128,938.05 is: 177,937.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,916.03 : 318,669.53 = 128,938.05 : x
  2. Step 2: Convert to fraction form
    230,916.03/318,669.53 = 128,938.05/x
  3. Step 3: Cross multiply
    230,916.03x = 318,669.53 × 128,938.05
  4. Step 4: Simplify right side
    230,916.03x = 41,088,627,147.93
  5. Step 5: Solve for x
    x = 41,088,627,147.93/230,916.03
  6. Step 6: Final answer
    x = 177,937.53

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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.