Home / 105,052.20-157,571.64-42,721.08

Finding the Fourth Proportional to 105,052.20, 157,571.64 and 42,721.08

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Solution

The fourth proportional to 105,052.20, 157,571.64 and 42,721.08 is: 64,078.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,052.20 : 157,571.64 = 42,721.08 : x
  2. Step 2: Convert to fraction form
    105,052.20/157,571.64 = 42,721.08/x
  3. Step 3: Cross multiply
    105,052.20x = 157,571.64 × 42,721.08
  4. Step 4: Simplify right side
    105,052.20x = 6,731,630,638.17
  5. Step 5: Solve for x
    x = 6,731,630,638.17/105,052.20
  6. Step 6: Final answer
    x = 64,078.91

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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.