Home / 145,910.01-201,351.72-81,381.21

Finding the Fourth Proportional to 145,910.01, 201,351.72 and 81,381.21

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Solution

The fourth proportional to 145,910.01, 201,351.72 and 81,381.21 is: 112,303.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,910.01 : 201,351.72 = 81,381.21 : x
  2. Step 2: Convert to fraction form
    145,910.01/201,351.72 = 81,381.21/x
  3. Step 3: Cross multiply
    145,910.01x = 201,351.72 × 81,381.21
  4. Step 4: Simplify right side
    145,910.01x = 16,386,246,609.18
  5. Step 5: Solve for x
    x = 16,386,246,609.18/145,910.01
  6. Step 6: Final answer
    x = 112,303.79

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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.