Home / 145,981.40-219,029.70-57,219.80

Finding the Fourth Proportional to 145,981.40, 219,029.70 and 57,219.80

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Solution

The fourth proportional to 145,981.40, 219,029.70 and 57,219.80 is: 85,852.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,981.40 : 219,029.70 = 57,219.80 : x
  2. Step 2: Convert to fraction form
    145,981.40/219,029.70 = 57,219.80/x
  3. Step 3: Cross multiply
    145,981.40x = 219,029.70 × 57,219.80
  4. Step 4: Simplify right side
    145,981.40x = 12,532,835,628.06
  5. Step 5: Solve for x
    x = 12,532,835,628.06/145,981.40
  6. Step 6: Final answer
    x = 85,852.28

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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.