Home / 145,855.10-218,454.60-86,806.10

Finding the Fourth Proportional to 145,855.10, 218,454.60 and 86,806.10

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Solution

The fourth proportional to 145,855.10, 218,454.60 and 86,806.10 is: 130,013.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.10 : 218,454.60 = 86,806.10 : x
  2. Step 2: Convert to fraction form
    145,855.10/218,454.60 = 86,806.10/x
  3. Step 3: Cross multiply
    145,855.10x = 218,454.60 × 86,806.10
  4. Step 4: Simplify right side
    145,855.10x = 18,963,191,853.06
  5. Step 5: Solve for x
    x = 18,963,191,853.06/145,855.10
  6. Step 6: Final answer
    x = 130,013.91

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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.