Home / 103,621.40-142,997.74-61,182.64

Finding the Fourth Proportional to 103,621.40, 142,997.74 and 61,182.64

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Solution

The fourth proportional to 103,621.40, 142,997.74 and 61,182.64 is: 84,432.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.40 : 142,997.74 = 61,182.64 : x
  2. Step 2: Convert to fraction form
    103,621.40/142,997.74 = 61,182.64/x
  3. Step 3: Cross multiply
    103,621.40x = 142,997.74 × 61,182.64
  4. Step 4: Simplify right side
    103,621.40x = 8,748,979,247.23
  5. Step 5: Solve for x
    x = 8,748,979,247.23/103,621.40
  6. Step 6: Final answer
    x = 84,432.17

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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.