Home / 102,980.28-142,039.38-94,509.74

Finding the Fourth Proportional to 102,980.28, 142,039.38 and 94,509.74

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Solution

The fourth proportional to 102,980.28, 142,039.38 and 94,509.74 is: 130,356.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,980.28 : 142,039.38 = 94,509.74 : x
  2. Step 2: Convert to fraction form
    102,980.28/142,039.38 = 94,509.74/x
  3. Step 3: Cross multiply
    102,980.28x = 142,039.38 × 94,509.74
  4. Step 4: Simplify right side
    102,980.28x = 13,424,104,873.56
  5. Step 5: Solve for x
    x = 13,424,104,873.56/102,980.28
  6. Step 6: Final answer
    x = 130,356.07

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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.