Home / 157,976.28-218,007.70-86,357.16

Finding the Fourth Proportional to 157,976.28, 218,007.70 and 86,357.16

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Solution

The fourth proportional to 157,976.28, 218,007.70 and 86,357.16 is: 119,173.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,976.28 : 218,007.70 = 86,357.16 : x
  2. Step 2: Convert to fraction form
    157,976.28/218,007.70 = 86,357.16/x
  3. Step 3: Cross multiply
    157,976.28x = 218,007.70 × 86,357.16
  4. Step 4: Simplify right side
    157,976.28x = 18,826,525,830.13
  5. Step 5: Solve for x
    x = 18,826,525,830.13/157,976.28
  6. Step 6: Final answer
    x = 119,173.12

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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.