Home / 108,519.04-149,768.64-66,102.40

Finding the Fourth Proportional to 108,519.04, 149,768.64 and 66,102.40

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Solution

The fourth proportional to 108,519.04, 149,768.64 and 66,102.40 is: 91,228.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,519.04 : 149,768.64 = 66,102.40 : x
  2. Step 2: Convert to fraction form
    108,519.04/149,768.64 = 66,102.40/x
  3. Step 3: Cross multiply
    108,519.04x = 149,768.64 × 66,102.40
  4. Step 4: Simplify right side
    108,519.04x = 9,900,066,548.74
  5. Step 5: Solve for x
    x = 9,900,066,548.74/108,519.04
  6. Step 6: Final answer
    x = 91,228.84

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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.