Home / 145,298.12-200,513.80-79,889.72

Finding the Fourth Proportional to 145,298.12, 200,513.80 and 79,889.72

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Solution

The fourth proportional to 145,298.12, 200,513.80 and 79,889.72 is: 110,249.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,298.12 : 200,513.80 = 79,889.72 : x
  2. Step 2: Convert to fraction form
    145,298.12/200,513.80 = 79,889.72/x
  3. Step 3: Cross multiply
    145,298.12x = 200,513.80 × 79,889.72
  4. Step 4: Simplify right side
    145,298.12x = 16,018,991,338.14
  5. Step 5: Solve for x
    x = 16,018,991,338.14/145,298.12
  6. Step 6: Final answer
    x = 110,249.13

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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.