Home / 120,987.51-166,910.54-75,586.47

Finding the Fourth Proportional to 120,987.51, 166,910.54 and 75,586.47

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Solution

The fourth proportional to 120,987.51, 166,910.54 and 75,586.47 is: 104,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,987.51 : 166,910.54 = 75,586.47 : x
  2. Step 2: Convert to fraction form
    120,987.51/166,910.54 = 75,586.47/x
  3. Step 3: Cross multiply
    120,987.51x = 166,910.54 × 75,586.47
  4. Step 4: Simplify right side
    120,987.51x = 12,616,178,146.46
  5. Step 5: Solve for x
    x = 12,616,178,146.46/120,987.51
  6. Step 6: Final answer
    x = 104,276.70

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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.