Home / 145,088.70-200,219.31-81,447.18

Finding the Fourth Proportional to 145,088.70, 200,219.31 and 81,447.18

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Solution

The fourth proportional to 145,088.70, 200,219.31 and 81,447.18 is: 112,395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,088.70 : 200,219.31 = 81,447.18 : x
  2. Step 2: Convert to fraction form
    145,088.70/200,219.31 = 81,447.18/x
  3. Step 3: Cross multiply
    145,088.70x = 200,219.31 × 81,447.18
  4. Step 4: Simplify right side
    145,088.70x = 16,307,298,181.05
  5. Step 5: Solve for x
    x = 16,307,298,181.05/145,088.70
  6. Step 6: Final answer
    x = 112,395.37

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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.