Home / 145,062.42-200,185.62-81,400.08

Finding the Fourth Proportional to 145,062.42, 200,185.62 and 81,400.08

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Solution

The fourth proportional to 145,062.42, 200,185.62 and 81,400.08 is: 112,331.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,062.42 : 200,185.62 = 81,400.08 : x
  2. Step 2: Convert to fraction form
    145,062.42/200,185.62 = 81,400.08/x
  3. Step 3: Cross multiply
    145,062.42x = 200,185.62 × 81,400.08
  4. Step 4: Simplify right side
    145,062.42x = 16,295,125,482.85
  5. Step 5: Solve for x
    x = 16,295,125,482.85/145,062.42
  6. Step 6: Final answer
    x = 112,331.82

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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.