Home / 145,890.90-218,836.35-86,696.10

Finding the Fourth Proportional to 145,890.90, 218,836.35 and 86,696.10

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Solution

The fourth proportional to 145,890.90, 218,836.35 and 86,696.10 is: 130,044.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,890.90 : 218,836.35 = 86,696.10 : x
  2. Step 2: Convert to fraction form
    145,890.90/218,836.35 = 86,696.10/x
  3. Step 3: Cross multiply
    145,890.90x = 218,836.35 × 86,696.10
  4. Step 4: Simplify right side
    145,890.90x = 18,972,258,083.24
  5. Step 5: Solve for x
    x = 18,972,258,083.24/145,890.90
  6. Step 6: Final answer
    x = 130,044.15

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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.