Home / 105,520.46-145,612.48-57,764.58

Finding the Fourth Proportional to 105,520.46, 145,612.48 and 57,764.58

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Solution

The fourth proportional to 105,520.46, 145,612.48 and 57,764.58 is: 79,711.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,520.46 : 145,612.48 = 57,764.58 : x
  2. Step 2: Convert to fraction form
    105,520.46/145,612.48 = 57,764.58/x
  3. Step 3: Cross multiply
    105,520.46x = 145,612.48 × 57,764.58
  4. Step 4: Simplify right side
    105,520.46x = 8,411,243,749.96
  5. Step 5: Solve for x
    x = 8,411,243,749.96/105,520.46
  6. Step 6: Final answer
    x = 79,711.97

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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.