Home / 158,808.32-219,154.08-87,186.72

Finding the Fourth Proportional to 158,808.32, 219,154.08 and 87,186.72

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Solution

The fourth proportional to 158,808.32, 219,154.08 and 87,186.72 is: 120,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,808.32 : 219,154.08 = 87,186.72 : x
  2. Step 2: Convert to fraction form
    158,808.32/219,154.08 = 87,186.72/x
  3. Step 3: Cross multiply
    158,808.32x = 219,154.08 × 87,186.72
  4. Step 4: Simplify right side
    158,808.32x = 19,107,325,409.82
  5. Step 5: Solve for x
    x = 19,107,325,409.82/158,808.32
  6. Step 6: Final answer
    x = 120,316.90

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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.