Home / 158,430.64-218,634.26-86,813.35

Finding the Fourth Proportional to 158,430.64, 218,634.26 and 86,813.35

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Solution

The fourth proportional to 158,430.64, 218,634.26 and 86,813.35 is: 119,802.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,430.64 : 218,634.26 = 86,813.35 : x
  2. Step 2: Convert to fraction form
    158,430.64/218,634.26 = 86,813.35/x
  3. Step 3: Cross multiply
    158,430.64x = 218,634.26 × 86,813.35
  4. Step 4: Simplify right side
    158,430.64x = 18,980,372,101.30
  5. Step 5: Solve for x
    x = 18,980,372,101.30/158,430.64
  6. Step 6: Final answer
    x = 119,802.41

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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.