Home / 145,891.02-201,329.64-78,823.02

Finding the Fourth Proportional to 145,891.02, 201,329.64 and 78,823.02

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Solution

The fourth proportional to 145,891.02, 201,329.64 and 78,823.02 is: 108,775.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,891.02 : 201,329.64 = 78,823.02 : x
  2. Step 2: Convert to fraction form
    145,891.02/201,329.64 = 78,823.02/x
  3. Step 3: Cross multiply
    145,891.02x = 201,329.64 × 78,823.02
  4. Step 4: Simplify right side
    145,891.02x = 15,869,410,240.31
  5. Step 5: Solve for x
    x = 15,869,410,240.31/145,891.02
  6. Step 6: Final answer
    x = 108,775.79

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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.