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Finding the Fourth Proportional to 153,950.56, 212,449.68 and 85,968.64

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Solution

The fourth proportional to 153,950.56, 212,449.68 and 85,968.64 is: 118,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,950.56 : 212,449.68 = 85,968.64 : x
  2. Step 2: Convert to fraction form
    153,950.56/212,449.68 = 85,968.64/x
  3. Step 3: Cross multiply
    153,950.56x = 212,449.68 × 85,968.64
  4. Step 4: Simplify right side
    153,950.56x = 18,264,010,058.04
  5. Step 5: Solve for x
    x = 18,264,010,058.04/153,950.56
  6. Step 6: Final answer
    x = 118,635.55

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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.