Home / 99,211.84-136,873.75-56,181.45

Finding the Fourth Proportional to 99,211.84, 136,873.75 and 56,181.45

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Solution

The fourth proportional to 99,211.84, 136,873.75 and 56,181.45 is: 77,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,211.84 : 136,873.75 = 56,181.45 : x
  2. Step 2: Convert to fraction form
    99,211.84/136,873.75 = 56,181.45/x
  3. Step 3: Cross multiply
    99,211.84x = 136,873.75 × 56,181.45
  4. Step 4: Simplify right side
    99,211.84x = 7,689,765,741.94
  5. Step 5: Solve for x
    x = 7,689,765,741.94/99,211.84
  6. Step 6: Final answer
    x = 77,508.55

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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.