Home / 101,285.60-152,021.28-51,401.12

Finding the Fourth Proportional to 101,285.60, 152,021.28 and 51,401.12

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Solution

The fourth proportional to 101,285.60, 152,021.28 and 51,401.12 is: 77,148.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,285.60 : 152,021.28 = 51,401.12 : x
  2. Step 2: Convert to fraction form
    101,285.60/152,021.28 = 51,401.12/x
  3. Step 3: Cross multiply
    101,285.60x = 152,021.28 × 51,401.12
  4. Step 4: Simplify right side
    101,285.60x = 7,814,064,055.83
  5. Step 5: Solve for x
    x = 7,814,064,055.83/101,285.60
  6. Step 6: Final answer
    x = 77,148.82

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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.