Home / 145,071.36-217,674.09-66,209.76

Finding the Fourth Proportional to 145,071.36, 217,674.09 and 66,209.76

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Solution

The fourth proportional to 145,071.36, 217,674.09 and 66,209.76 is: 99,345.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,071.36 : 217,674.09 = 66,209.76 : x
  2. Step 2: Convert to fraction form
    145,071.36/217,674.09 = 66,209.76/x
  3. Step 3: Cross multiply
    145,071.36x = 217,674.09 × 66,209.76
  4. Step 4: Simplify right side
    145,071.36x = 14,412,149,257.12
  5. Step 5: Solve for x
    x = 14,412,149,257.12/145,071.36
  6. Step 6: Final answer
    x = 99,345.24

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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.