Home / 120,306.02-165,912-103,304.48

Finding the Fourth Proportional to 120,306.02, 165,912 and 103,304.48

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Solution

The fourth proportional to 120,306.02, 165,912 and 103,304.48 is: 142,465.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,306.02 : 165,912 = 103,304.48 : x
  2. Step 2: Convert to fraction form
    120,306.02/165,912 = 103,304.48/x
  3. Step 3: Cross multiply
    120,306.02x = 165,912 × 103,304.48
  4. Step 4: Simplify right side
    120,306.02x = 17,139,452,885.76
  5. Step 5: Solve for x
    x = 17,139,452,885.76/120,306.02
  6. Step 6: Final answer
    x = 142,465.46

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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.