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Finding the Fourth Proportional to 157,346.54, 217,140.72 and 85,726.54

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Solution

The fourth proportional to 157,346.54, 217,140.72 and 85,726.54 is: 118,303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,346.54 : 217,140.72 = 85,726.54 : x
  2. Step 2: Convert to fraction form
    157,346.54/217,140.72 = 85,726.54/x
  3. Step 3: Cross multiply
    157,346.54x = 217,140.72 × 85,726.54
  4. Step 4: Simplify right side
    157,346.54x = 18,614,722,190.08
  5. Step 5: Solve for x
    x = 18,614,722,190.08/157,346.54
  6. Step 6: Final answer
    x = 118,303.98

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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.