Home / 145,712.14-201,086.12-81,185.65

Finding the Fourth Proportional to 145,712.14, 201,086.12 and 81,185.65

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Solution

The fourth proportional to 145,712.14, 201,086.12 and 81,185.65 is: 112,038.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,712.14 : 201,086.12 = 81,185.65 : x
  2. Step 2: Convert to fraction form
    145,712.14/201,086.12 = 81,185.65/x
  3. Step 3: Cross multiply
    145,712.14x = 201,086.12 × 81,185.65
  4. Step 4: Simplify right side
    145,712.14x = 16,325,307,058.43
  5. Step 5: Solve for x
    x = 16,325,307,058.43/145,712.14
  6. Step 6: Final answer
    x = 112,038.07

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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.