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Finding the Fourth Proportional to 103,285.50, 142,533.99 and 58,573.50

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Solution

The fourth proportional to 103,285.50, 142,533.99 and 58,573.50 is: 80,831.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,285.50 : 142,533.99 = 58,573.50 : x
  2. Step 2: Convert to fraction form
    103,285.50/142,533.99 = 58,573.50/x
  3. Step 3: Cross multiply
    103,285.50x = 142,533.99 × 58,573.50
  4. Step 4: Simplify right side
    103,285.50x = 8,348,714,663.27
  5. Step 5: Solve for x
    x = 8,348,714,663.27/103,285.50
  6. Step 6: Final answer
    x = 80,831.43

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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.