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Finding the Fourth Proportional to 105,722.55, 145,900.02 and 60,407.91

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Solution

The fourth proportional to 105,722.55, 145,900.02 and 60,407.91 is: 83,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,722.55 : 145,900.02 = 60,407.91 : x
  2. Step 2: Convert to fraction form
    105,722.55/145,900.02 = 60,407.91/x
  3. Step 3: Cross multiply
    105,722.55x = 145,900.02 × 60,407.91
  4. Step 4: Simplify right side
    105,722.55x = 8,813,515,277.16
  5. Step 5: Solve for x
    x = 8,813,515,277.16/105,722.55
  6. Step 6: Final answer
    x = 83,364.57

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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.