Home / 145,278.78-200,483.46-81,615.18

Finding the Fourth Proportional to 145,278.78, 200,483.46 and 81,615.18

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Solution

The fourth proportional to 145,278.78, 200,483.46 and 81,615.18 is: 112,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,278.78 : 200,483.46 = 81,615.18 : x
  2. Step 2: Convert to fraction form
    145,278.78/200,483.46 = 81,615.18/x
  3. Step 3: Cross multiply
    145,278.78x = 200,483.46 × 81,615.18
  4. Step 4: Simplify right side
    145,278.78x = 16,362,493,674.92
  5. Step 5: Solve for x
    x = 16,362,493,674.92/145,278.78
  6. Step 6: Final answer
    x = 112,628.24

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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.