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Finding the Fourth Proportional to 157,243.08, 217,000.80 and 85,624.32

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Solution

The fourth proportional to 157,243.08, 217,000.80 and 85,624.32 is: 118,164.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,243.08 : 217,000.80 = 85,624.32 : x
  2. Step 2: Convert to fraction form
    157,243.08/217,000.80 = 85,624.32/x
  3. Step 3: Cross multiply
    157,243.08x = 217,000.80 × 85,624.32
  4. Step 4: Simplify right side
    157,243.08x = 18,580,545,939.46
  5. Step 5: Solve for x
    x = 18,580,545,939.46/157,243.08
  6. Step 6: Final answer
    x = 118,164.47

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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.