Home / 145,547.10-200,840.70-81,883.56

Finding the Fourth Proportional to 145,547.10, 200,840.70 and 81,883.56

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Solution

The fourth proportional to 145,547.10, 200,840.70 and 81,883.56 is: 112,991.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,547.10 : 200,840.70 = 81,883.56 : x
  2. Step 2: Convert to fraction form
    145,547.10/200,840.70 = 81,883.56/x
  3. Step 3: Cross multiply
    145,547.10x = 200,840.70 × 81,883.56
  4. Step 4: Simplify right side
    145,547.10x = 16,445,551,508.89
  5. Step 5: Solve for x
    x = 16,445,551,508.89/145,547.10
  6. Step 6: Final answer
    x = 112,991.27

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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.