Home / 127,319.19-175,634.58-86,485.42

Finding the Fourth Proportional to 127,319.19, 175,634.58 and 86,485.42

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Solution

The fourth proportional to 127,319.19, 175,634.58 and 86,485.42 is: 119,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,319.19 : 175,634.58 = 86,485.42 : x
  2. Step 2: Convert to fraction form
    127,319.19/175,634.58 = 86,485.42/x
  3. Step 3: Cross multiply
    127,319.19x = 175,634.58 × 86,485.42
  4. Step 4: Simplify right side
    127,319.19x = 15,189,830,417.82
  5. Step 5: Solve for x
    x = 15,189,830,417.82/127,319.19
  6. Step 6: Final answer
    x = 119,305.11

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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.