Home / 154,107.09-212,663.57-86,124.36

Finding the Fourth Proportional to 154,107.09, 212,663.57 and 86,124.36

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Solution

The fourth proportional to 154,107.09, 212,663.57 and 86,124.36 is: 118,849.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,107.09 : 212,663.57 = 86,124.36 : x
  2. Step 2: Convert to fraction form
    154,107.09/212,663.57 = 86,124.36/x
  3. Step 3: Cross multiply
    154,107.09x = 212,663.57 × 86,124.36
  4. Step 4: Simplify right side
    154,107.09x = 18,315,513,430.94
  5. Step 5: Solve for x
    x = 18,315,513,430.94/154,107.09
  6. Step 6: Final answer
    x = 118,849.26

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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.