Home / 145,068.89-200,195.18-81,406.68

Finding the Fourth Proportional to 145,068.89, 200,195.18 and 81,406.68

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Solution

The fourth proportional to 145,068.89, 200,195.18 and 81,406.68 is: 112,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,068.89 : 200,195.18 = 81,406.68 : x
  2. Step 2: Convert to fraction form
    145,068.89/200,195.18 = 81,406.68/x
  3. Step 3: Cross multiply
    145,068.89x = 200,195.18 × 81,406.68
  4. Step 4: Simplify right side
    145,068.89x = 16,297,224,955.80
  5. Step 5: Solve for x
    x = 16,297,224,955.80/145,068.89
  6. Step 6: Final answer
    x = 112,341.28

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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.