Home / 99,209.05-136,916.95-56,196.21

Finding the Fourth Proportional to 99,209.05, 136,916.95 and 56,196.21

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Solution

The fourth proportional to 99,209.05, 136,916.95 and 56,196.21 is: 77,555.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,209.05 : 136,916.95 = 56,196.21 : x
  2. Step 2: Convert to fraction form
    99,209.05/136,916.95 = 56,196.21/x
  3. Step 3: Cross multiply
    99,209.05x = 136,916.95 × 56,196.21
  4. Step 4: Simplify right side
    99,209.05x = 7,694,213,534.27
  5. Step 5: Solve for x
    x = 7,694,213,534.27/99,209.05
  6. Step 6: Final answer
    x = 77,555.56

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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.