Home / 158,210.08-218,408.88-91,129.12

Finding the Fourth Proportional to 158,210.08, 218,408.88 and 91,129.12

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Solution

The fourth proportional to 158,210.08, 218,408.88 and 91,129.12 is: 125,803.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,210.08 : 218,408.88 = 91,129.12 : x
  2. Step 2: Convert to fraction form
    158,210.08/218,408.88 = 91,129.12/x
  3. Step 3: Cross multiply
    158,210.08x = 218,408.88 × 91,129.12
  4. Step 4: Simplify right side
    158,210.08x = 19,903,409,034.59
  5. Step 5: Solve for x
    x = 19,903,409,034.59/158,210.08
  6. Step 6: Final answer
    x = 125,803.67

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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.