Home / 99,138.84-136,806.90-56,120.28

Finding the Fourth Proportional to 99,138.84, 136,806.90 and 56,120.28

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Solution

The fourth proportional to 99,138.84, 136,806.90 and 56,120.28 is: 77,443.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,138.84 : 136,806.90 = 56,120.28 : x
  2. Step 2: Convert to fraction form
    99,138.84/136,806.90 = 56,120.28/x
  3. Step 3: Cross multiply
    99,138.84x = 136,806.90 × 56,120.28
  4. Step 4: Simplify right side
    99,138.84x = 7,677,641,533.93
  5. Step 5: Solve for x
    x = 7,677,641,533.93/99,138.84
  6. Step 6: Final answer
    x = 77,443.33

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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.