Home / 109,215.40-163,628.70-89,386.60

Finding the Fourth Proportional to 109,215.40, 163,628.70 and 89,386.60

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Solution

The fourth proportional to 109,215.40, 163,628.70 and 89,386.60 is: 133,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,215.40 : 163,628.70 = 89,386.60 : x
  2. Step 2: Convert to fraction form
    109,215.40/163,628.70 = 89,386.60/x
  3. Step 3: Cross multiply
    109,215.40x = 163,628.70 × 89,386.60
  4. Step 4: Simplify right side
    109,215.40x = 14,626,213,155.42
  5. Step 5: Solve for x
    x = 14,626,213,155.42/109,215.40
  6. Step 6: Final answer
    x = 133,920.79

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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.