Home / 157,359.12-217,152.84-85,739.64

Finding the Fourth Proportional to 157,359.12, 217,152.84 and 85,739.64

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Solution

The fourth proportional to 157,359.12, 217,152.84 and 85,739.64 is: 118,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,359.12 : 217,152.84 = 85,739.64 : x
  2. Step 2: Convert to fraction form
    157,359.12/217,152.84 = 85,739.64/x
  3. Step 3: Cross multiply
    157,359.12x = 217,152.84 × 85,739.64
  4. Step 4: Simplify right side
    157,359.12x = 18,618,606,326.58
  5. Step 5: Solve for x
    x = 18,618,606,326.58/157,359.12
  6. Step 6: Final answer
    x = 118,319.21

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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.