Home / 157,434.19-217,255.95-85,813.58

Finding the Fourth Proportional to 157,434.19, 217,255.95 and 85,813.58

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Solution

The fourth proportional to 157,434.19, 217,255.95 and 85,813.58 is: 118,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,434.19 : 217,255.95 = 85,813.58 : x
  2. Step 2: Convert to fraction form
    157,434.19/217,255.95 = 85,813.58/x
  3. Step 3: Cross multiply
    157,434.19x = 217,255.95 × 85,813.58
  4. Step 4: Simplify right side
    157,434.19x = 18,643,511,388.94
  5. Step 5: Solve for x
    x = 18,643,511,388.94/157,434.19
  6. Step 6: Final answer
    x = 118,420.98

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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.