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Finding the Fourth Proportional to 157,498.40, 217,339.80 and 85,877.84

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Solution

The fourth proportional to 157,498.40, 217,339.80 and 85,877.84 is: 118,507.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,498.40 : 217,339.80 = 85,877.84 : x
  2. Step 2: Convert to fraction form
    157,498.40/217,339.80 = 85,877.84/x
  3. Step 3: Cross multiply
    157,498.40x = 217,339.80 × 85,877.84
  4. Step 4: Simplify right side
    157,498.40x = 18,664,672,570.03
  5. Step 5: Solve for x
    x = 18,664,672,570.03/157,498.40
  6. Step 6: Final answer
    x = 118,507.06

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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.