Home / 145,619.06-218,428.40-45,787.97

Finding the Fourth Proportional to 145,619.06, 218,428.40 and 45,787.97

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Solution

The fourth proportional to 145,619.06, 218,428.40 and 45,787.97 is: 68,681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,619.06 : 218,428.40 = 45,787.97 : x
  2. Step 2: Convert to fraction form
    145,619.06/218,428.40 = 45,787.97/x
  3. Step 3: Cross multiply
    145,619.06x = 218,428.40 × 45,787.97
  4. Step 4: Simplify right side
    145,619.06x = 10,001,393,686.89
  5. Step 5: Solve for x
    x = 10,001,393,686.89/145,619.06
  6. Step 6: Final answer
    x = 68,681.90

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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.