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Finding the Fourth Proportional to 111,342.92, 153,655.38 and 61,038.92

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Solution

The fourth proportional to 111,342.92, 153,655.38 and 61,038.92 is: 84,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,342.92 : 153,655.38 = 61,038.92 : x
  2. Step 2: Convert to fraction form
    111,342.92/153,655.38 = 61,038.92/x
  3. Step 3: Cross multiply
    111,342.92x = 153,655.38 × 61,038.92
  4. Step 4: Simplify right side
    111,342.92x = 9,378,958,447.39
  5. Step 5: Solve for x
    x = 9,378,958,447.39/111,342.92
  6. Step 6: Final answer
    x = 84,234.89

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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.