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Finding the Fourth Proportional to 142,999.48, 197,330.70 and 79,333.48

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Solution

The fourth proportional to 142,999.48, 197,330.70 and 79,333.48 is: 109,475.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,999.48 : 197,330.70 = 79,333.48 : x
  2. Step 2: Convert to fraction form
    142,999.48/197,330.70 = 79,333.48/x
  3. Step 3: Cross multiply
    142,999.48x = 197,330.70 × 79,333.48
  4. Step 4: Simplify right side
    142,999.48x = 15,654,931,141.84
  5. Step 5: Solve for x
    x = 15,654,931,141.84/142,999.48
  6. Step 6: Final answer
    x = 109,475.44

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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.