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Finding the Fourth Proportional to 157,256.80, 235,424.40 and 138,824.80

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Solution

The fourth proportional to 157,256.80, 235,424.40 and 138,824.80 is: 207,830.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,256.80 : 235,424.40 = 138,824.80 : x
  2. Step 2: Convert to fraction form
    157,256.80/235,424.40 = 138,824.80/x
  3. Step 3: Cross multiply
    157,256.80x = 235,424.40 × 138,824.80
  4. Step 4: Simplify right side
    157,256.80x = 32,682,745,245.12
  5. Step 5: Solve for x
    x = 32,682,745,245.12/157,256.80
  6. Step 6: Final answer
    x = 207,830.41

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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.