Home / 158,078.77-218,143.29-90,117.64

Finding the Fourth Proportional to 158,078.77, 218,143.29 and 90,117.64

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Solution

The fourth proportional to 158,078.77, 218,143.29 and 90,117.64 is: 124,359.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,078.77 : 218,143.29 = 90,117.64 : x
  2. Step 2: Convert to fraction form
    158,078.77/218,143.29 = 90,117.64/x
  3. Step 3: Cross multiply
    158,078.77x = 218,143.29 × 90,117.64
  4. Step 4: Simplify right side
    158,078.77x = 19,658,559,087.26
  5. Step 5: Solve for x
    x = 19,658,559,087.26/158,078.77
  6. Step 6: Final answer
    x = 124,359.26

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1.5x scale

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.