Home / 155,455.46-231,970.74-138,700.30

Finding the Fourth Proportional to 155,455.46, 231,970.74 and 138,700.30

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Solution

The fourth proportional to 155,455.46, 231,970.74 and 138,700.30 is: 206,968.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,455.46 : 231,970.74 = 138,700.30 : x
  2. Step 2: Convert to fraction form
    155,455.46/231,970.74 = 138,700.30/x
  3. Step 3: Cross multiply
    155,455.46x = 231,970.74 × 138,700.30
  4. Step 4: Simplify right side
    155,455.46x = 32,174,411,229.22
  5. Step 5: Solve for x
    x = 32,174,411,229.22/155,455.46
  6. Step 6: Final answer
    x = 206,968.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.