Home / 158,417.03-218,607.14-90,431.30

Finding the Fourth Proportional to 158,417.03, 218,607.14 and 90,431.30

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Solution

The fourth proportional to 158,417.03, 218,607.14 and 90,431.30 is: 124,790.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,417.03 : 218,607.14 = 90,431.30 : x
  2. Step 2: Convert to fraction form
    158,417.03/218,607.14 = 90,431.30/x
  3. Step 3: Cross multiply
    158,417.03x = 218,607.14 × 90,431.30
  4. Step 4: Simplify right side
    158,417.03x = 19,768,928,632.08
  5. Step 5: Solve for x
    x = 19,768,928,632.08/158,417.03
  6. Step 6: Final answer
    x = 124,790.42

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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.