Home / 157,436.45-217,264.56-85,816.47

Finding the Fourth Proportional to 157,436.45, 217,264.56 and 85,816.47

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Solution

The fourth proportional to 157,436.45, 217,264.56 and 85,816.47 is: 118,427.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,436.45 : 217,264.56 = 85,816.47 : x
  2. Step 2: Convert to fraction form
    157,436.45/217,264.56 = 85,816.47/x
  3. Step 3: Cross multiply
    157,436.45x = 217,264.56 × 85,816.47
  4. Step 4: Simplify right side
    157,436.45x = 18,644,877,595.30
  5. Step 5: Solve for x
    x = 18,644,877,595.30/157,436.45
  6. Step 6: Final answer
    x = 118,427.96

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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.