Home / 145,112.66-200,244.50-81,438.16

Finding the Fourth Proportional to 145,112.66, 200,244.50 and 81,438.16

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Solution

The fourth proportional to 145,112.66, 200,244.50 and 81,438.16 is: 112,378.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,112.66 : 200,244.50 = 81,438.16 : x
  2. Step 2: Convert to fraction form
    145,112.66/200,244.50 = 81,438.16/x
  3. Step 3: Cross multiply
    145,112.66x = 200,244.50 × 81,438.16
  4. Step 4: Simplify right side
    145,112.66x = 16,307,542,722.32
  5. Step 5: Solve for x
    x = 16,307,542,722.32/145,112.66
  6. Step 6: Final answer
    x = 112,378.50

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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.