Home / 145,863.32-201,290.18-81,331.80

Finding the Fourth Proportional to 145,863.32, 201,290.18 and 81,331.80

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Solution

The fourth proportional to 145,863.32, 201,290.18 and 81,331.80 is: 112,237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,863.32 : 201,290.18 = 81,331.80 : x
  2. Step 2: Convert to fraction form
    145,863.32/201,290.18 = 81,331.80/x
  3. Step 3: Cross multiply
    145,863.32x = 201,290.18 × 81,331.80
  4. Step 4: Simplify right side
    145,863.32x = 16,371,292,661.72
  5. Step 5: Solve for x
    x = 16,371,292,661.72/145,863.32
  6. Step 6: Final answer
    x = 112,237.21

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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.