Home / 145,731.78-218,605.51-45,899.79

Finding the Fourth Proportional to 145,731.78, 218,605.51 and 45,899.79

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Solution

The fourth proportional to 145,731.78, 218,605.51 and 45,899.79 is: 68,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,731.78 : 218,605.51 = 45,899.79 : x
  2. Step 2: Convert to fraction form
    145,731.78/218,605.51 = 45,899.79/x
  3. Step 3: Cross multiply
    145,731.78x = 218,605.51 × 45,899.79
  4. Step 4: Simplify right side
    145,731.78x = 10,033,945,981.26
  5. Step 5: Solve for x
    x = 10,033,945,981.26/145,731.78
  6. Step 6: Final answer
    x = 68,852.15

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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.