Home / 109,215.40-163,823.10-30,330.40

Finding the Fourth Proportional to 109,215.40, 163,823.10 and 30,330.40

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Solution

The fourth proportional to 109,215.40, 163,823.10 and 30,330.40 is: 45,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,215.40 : 163,823.10 = 30,330.40 : x
  2. Step 2: Convert to fraction form
    109,215.40/163,823.10 = 30,330.40/x
  3. Step 3: Cross multiply
    109,215.40x = 163,823.10 × 30,330.40
  4. Step 4: Simplify right side
    109,215.40x = 4,968,820,152.24
  5. Step 5: Solve for x
    x = 4,968,820,152.24/109,215.40
  6. Step 6: Final answer
    x = 45,495.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.