Home / 105,612.19-145,744.85-63,180.74

Finding the Fourth Proportional to 105,612.19, 145,744.85 and 63,180.74

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Solution

The fourth proportional to 105,612.19, 145,744.85 and 63,180.74 is: 87,189.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,612.19 : 145,744.85 = 63,180.74 : x
  2. Step 2: Convert to fraction form
    105,612.19/145,744.85 = 63,180.74/x
  3. Step 3: Cross multiply
    105,612.19x = 145,744.85 × 63,180.74
  4. Step 4: Simplify right side
    105,612.19x = 9,208,267,996.50
  5. Step 5: Solve for x
    x = 9,208,267,996.50/105,612.19
  6. Step 6: Final answer
    x = 87,189.44

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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.