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Finding the Fourth Proportional to 158,349.72, 218,523.24 and 86,730.24

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Solution

The fourth proportional to 158,349.72, 218,523.24 and 86,730.24 is: 119,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,349.72 : 218,523.24 = 86,730.24 : x
  2. Step 2: Convert to fraction form
    158,349.72/218,523.24 = 86,730.24/x
  3. Step 3: Cross multiply
    158,349.72x = 218,523.24 × 86,730.24
  4. Step 4: Simplify right side
    158,349.72x = 18,952,573,050.78
  5. Step 5: Solve for x
    x = 18,952,573,050.78/158,349.72
  6. Step 6: Final answer
    x = 119,688.07

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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.