Home / 145,868.05-218,782.64-40,678.21

Finding the Fourth Proportional to 145,868.05, 218,782.64 and 40,678.21

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Solution

The fourth proportional to 145,868.05, 218,782.64 and 40,678.21 is: 61,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,868.05 : 218,782.64 = 40,678.21 : x
  2. Step 2: Convert to fraction form
    145,868.05/218,782.64 = 40,678.21/x
  3. Step 3: Cross multiply
    145,868.05x = 218,782.64 × 40,678.21
  4. Step 4: Simplify right side
    145,868.05x = 8,899,685,970.88
  5. Step 5: Solve for x
    x = 8,899,685,970.88/145,868.05
  6. Step 6: Final answer
    x = 61,011.89

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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.