Home / 158,298.72-218,457.18-86,685.54

Finding the Fourth Proportional to 158,298.72, 218,457.18 and 86,685.54

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Solution

The fourth proportional to 158,298.72, 218,457.18 and 86,685.54 is: 119,628.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,298.72 : 218,457.18 = 86,685.54 : x
  2. Step 2: Convert to fraction form
    158,298.72/218,457.18 = 86,685.54/x
  3. Step 3: Cross multiply
    158,298.72x = 218,457.18 × 86,685.54
  4. Step 4: Simplify right side
    158,298.72x = 18,937,078,615.18
  5. Step 5: Solve for x
    x = 18,937,078,615.18/158,298.72
  6. Step 6: Final answer
    x = 119,628.75

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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.