Home / 109,461.36-163,946-66,650.84

Finding the Fourth Proportional to 109,461.36, 163,946 and 66,650.84

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Solution

The fourth proportional to 109,461.36, 163,946 and 66,650.84 is: 99,826.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,461.36 : 163,946 = 66,650.84 : x
  2. Step 2: Convert to fraction form
    109,461.36/163,946 = 66,650.84/x
  3. Step 3: Cross multiply
    109,461.36x = 163,946 × 66,650.84
  4. Step 4: Simplify right side
    109,461.36x = 10,927,138,614.64
  5. Step 5: Solve for x
    x = 10,927,138,614.64/109,461.36
  6. Step 6: Final answer
    x = 99,826.45

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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.