Home / 145,879.02-201,313.08-78,811.02

Finding the Fourth Proportional to 145,879.02, 201,313.08 and 78,811.02

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Solution

The fourth proportional to 145,879.02, 201,313.08 and 78,811.02 is: 108,759.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,879.02 : 201,313.08 = 78,811.02 : x
  2. Step 2: Convert to fraction form
    145,879.02/201,313.08 = 78,811.02/x
  3. Step 3: Cross multiply
    145,879.02x = 201,313.08 × 78,811.02
  4. Step 4: Simplify right side
    145,879.02x = 15,865,689,174.14
  5. Step 5: Solve for x
    x = 15,865,689,174.14/145,879.02
  6. Step 6: Final answer
    x = 108,759.23

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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.