Home / 158,298.93-218,459.03-86,685.21

Finding the Fourth Proportional to 158,298.93, 218,459.03 and 86,685.21

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Solution

The fourth proportional to 158,298.93, 218,459.03 and 86,685.21 is: 119,629.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,298.93 : 218,459.03 = 86,685.21 : x
  2. Step 2: Convert to fraction form
    158,298.93/218,459.03 = 86,685.21/x
  3. Step 3: Cross multiply
    158,298.93x = 218,459.03 × 86,685.21
  4. Step 4: Simplify right side
    158,298.93x = 18,937,166,458.52
  5. Step 5: Solve for x
    x = 18,937,166,458.52/158,298.93
  6. Step 6: Final answer
    x = 119,629.15

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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.