Home / 145,857.10-218,457.60-86,808.10

Finding the Fourth Proportional to 145,857.10, 218,457.60 and 86,808.10

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Solution

The fourth proportional to 145,857.10, 218,457.60 and 86,808.10 is: 130,016.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,857.10 : 218,457.60 = 86,808.10 : x
  2. Step 2: Convert to fraction form
    145,857.10/218,457.60 = 86,808.10/x
  3. Step 3: Cross multiply
    145,857.10x = 218,457.60 × 86,808.10
  4. Step 4: Simplify right side
    145,857.10x = 18,963,889,186.56
  5. Step 5: Solve for x
    x = 18,963,889,186.56/145,857.10
  6. Step 6: Final answer
    x = 130,016.91

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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.