Home / 123,246.81-170,080.61-66,658.17

Finding the Fourth Proportional to 123,246.81, 170,080.61 and 66,658.17

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Solution

The fourth proportional to 123,246.81, 170,080.61 and 66,658.17 is: 91,988.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,246.81 : 170,080.61 = 66,658.17 : x
  2. Step 2: Convert to fraction form
    123,246.81/170,080.61 = 66,658.17/x
  3. Step 3: Cross multiply
    123,246.81x = 170,080.61 × 66,658.17
  4. Step 4: Simplify right side
    123,246.81x = 11,337,261,881.79
  5. Step 5: Solve for x
    x = 11,337,261,881.79/123,246.81
  6. Step 6: Final answer
    x = 91,988.28

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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.