Home / 145,619.07-218,428.41-45,787.98

Finding the Fourth Proportional to 145,619.07, 218,428.41 and 45,787.98

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Solution

The fourth proportional to 145,619.07, 218,428.41 and 45,787.98 is: 68,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,619.07 : 218,428.41 = 45,787.98 : x
  2. Step 2: Convert to fraction form
    145,619.07/218,428.41 = 45,787.98/x
  3. Step 3: Cross multiply
    145,619.07x = 218,428.41 × 45,787.98
  4. Step 4: Simplify right side
    145,619.07x = 10,001,395,668.51
  5. Step 5: Solve for x
    x = 10,001,395,668.51/145,619.07
  6. Step 6: Final answer
    x = 68,681.91

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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.