Home / 136,554.50-188,443.32-76,130.12

Finding the Fourth Proportional to 136,554.50, 188,443.32 and 76,130.12

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Solution

The fourth proportional to 136,554.50, 188,443.32 and 76,130.12 is: 105,058.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,554.50 : 188,443.32 = 76,130.12 : x
  2. Step 2: Convert to fraction form
    136,554.50/188,443.32 = 76,130.12/x
  3. Step 3: Cross multiply
    136,554.50x = 188,443.32 × 76,130.12
  4. Step 4: Simplify right side
    136,554.50x = 14,346,212,564.80
  5. Step 5: Solve for x
    x = 14,346,212,564.80/136,554.50
  6. Step 6: Final answer
    x = 105,058.51

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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.