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Finding the Fourth Proportional to 130,523.20, 195,784.80 and 89,051.20

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Solution

The fourth proportional to 130,523.20, 195,784.80 and 89,051.20 is: 133,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,523.20 : 195,784.80 = 89,051.20 : x
  2. Step 2: Convert to fraction form
    130,523.20/195,784.80 = 89,051.20/x
  3. Step 3: Cross multiply
    130,523.20x = 195,784.80 × 89,051.20
  4. Step 4: Simplify right side
    130,523.20x = 17,434,871,381.76
  5. Step 5: Solve for x
    x = 17,434,871,381.76/130,523.20
  6. Step 6: Final answer
    x = 133,576.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.