Home / 105,771.28-146,116.20-84,522.64

Finding the Fourth Proportional to 105,771.28, 146,116.20 and 84,522.64

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Solution

The fourth proportional to 105,771.28, 146,116.20 and 84,522.64 is: 116,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,771.28 : 146,116.20 = 84,522.64 : x
  2. Step 2: Convert to fraction form
    105,771.28/146,116.20 = 84,522.64/x
  3. Step 3: Cross multiply
    105,771.28x = 146,116.20 × 84,522.64
  4. Step 4: Simplify right side
    105,771.28x = 12,350,126,970.77
  5. Step 5: Solve for x
    x = 12,350,126,970.77/105,771.28
  6. Step 6: Final answer
    x = 116,762.57

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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.