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Finding the Fourth Proportional to 105,741.40, 158,573.70 and 53,133.40

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Solution

The fourth proportional to 105,741.40, 158,573.70 and 53,133.40 is: 79,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,741.40 : 158,573.70 = 53,133.40 : x
  2. Step 2: Convert to fraction form
    105,741.40/158,573.70 = 53,133.40/x
  3. Step 3: Cross multiply
    105,741.40x = 158,573.70 × 53,133.40
  4. Step 4: Simplify right side
    105,741.40x = 8,425,559,831.58
  5. Step 5: Solve for x
    x = 8,425,559,831.58/105,741.40
  6. Step 6: Final answer
    x = 79,680.80

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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.