Home / 145,977.87-201,449.18-81,443.27

Finding the Fourth Proportional to 145,977.87, 201,449.18 and 81,443.27

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Solution

The fourth proportional to 145,977.87, 201,449.18 and 81,443.27 is: 112,391.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,977.87 : 201,449.18 = 81,443.27 : x
  2. Step 2: Convert to fraction form
    145,977.87/201,449.18 = 81,443.27/x
  3. Step 3: Cross multiply
    145,977.87x = 201,449.18 × 81,443.27
  4. Step 4: Simplify right side
    145,977.87x = 16,406,679,532.10
  5. Step 5: Solve for x
    x = 16,406,679,532.10/145,977.87
  6. Step 6: Final answer
    x = 112,391.55

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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.