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Finding the Fourth Proportional to 103,245.60, 142,491.60 and 62,971.68

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Solution

The fourth proportional to 103,245.60, 142,491.60 and 62,971.68 is: 86,908.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,245.60 : 142,491.60 = 62,971.68 : x
  2. Step 2: Convert to fraction form
    103,245.60/142,491.60 = 62,971.68/x
  3. Step 3: Cross multiply
    103,245.60x = 142,491.60 × 62,971.68
  4. Step 4: Simplify right side
    103,245.60x = 8,972,935,437.89
  5. Step 5: Solve for x
    x = 8,972,935,437.89/103,245.60
  6. Step 6: Final answer
    x = 86,908.65

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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.