Home / 145,159.10-200,314.41-81,499.58

Finding the Fourth Proportional to 145,159.10, 200,314.41 and 81,499.58

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Solution

The fourth proportional to 145,159.10, 200,314.41 and 81,499.58 is: 112,466.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,159.10 : 200,314.41 = 81,499.58 : x
  2. Step 2: Convert to fraction form
    145,159.10/200,314.41 = 81,499.58/x
  3. Step 3: Cross multiply
    145,159.10x = 200,314.41 × 81,499.58
  4. Step 4: Simplify right side
    145,159.10x = 16,325,540,282.95
  5. Step 5: Solve for x
    x = 16,325,540,282.95/145,159.10
  6. Step 6: Final answer
    x = 112,466.53

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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.