Home / 157,435.45-217,263.18-85,815.47

Finding the Fourth Proportional to 157,435.45, 217,263.18 and 85,815.47

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Solution

The fourth proportional to 157,435.45, 217,263.18 and 85,815.47 is: 118,426.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,435.45 : 217,263.18 = 85,815.47 : x
  2. Step 2: Convert to fraction form
    157,435.45/217,263.18 = 85,815.47/x
  3. Step 3: Cross multiply
    157,435.45x = 217,263.18 × 85,815.47
  4. Step 4: Simplify right side
    157,435.45x = 18,644,541,065.54
  5. Step 5: Solve for x
    x = 18,644,541,065.54/157,435.45
  6. Step 6: Final answer
    x = 118,426.58

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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.