Home / 122,100.08-183,430.91-86,159.30

Finding the Fourth Proportional to 122,100.08, 183,430.91 and 86,159.30

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Solution

The fourth proportional to 122,100.08, 183,430.91 and 86,159.30 is: 129,437.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,100.08 : 183,430.91 = 86,159.30 : x
  2. Step 2: Convert to fraction form
    122,100.08/183,430.91 = 86,159.30/x
  3. Step 3: Cross multiply
    122,100.08x = 183,430.91 × 86,159.30
  4. Step 4: Simplify right side
    122,100.08x = 15,804,278,102.21
  5. Step 5: Solve for x
    x = 15,804,278,102.21/122,100.08
  6. Step 6: Final answer
    x = 129,437.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.