Home / 103,087.96-142,547.70-81,830.32

Finding the Fourth Proportional to 103,087.96, 142,547.70 and 81,830.32

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Solution

The fourth proportional to 103,087.96, 142,547.70 and 81,830.32 is: 113,153.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,087.96 : 142,547.70 = 81,830.32 : x
  2. Step 2: Convert to fraction form
    103,087.96/142,547.70 = 81,830.32/x
  3. Step 3: Cross multiply
    103,087.96x = 142,547.70 × 81,830.32
  4. Step 4: Simplify right side
    103,087.96x = 11,664,723,906.26
  5. Step 5: Solve for x
    x = 11,664,723,906.26/103,087.96
  6. Step 6: Final answer
    x = 113,153.12

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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.