Home / 211,681.32-317,492.06-71,421.48

Finding the Fourth Proportional to 211,681.32, 317,492.06 and 71,421.48

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Solution

The fourth proportional to 211,681.32, 317,492.06 and 71,421.48 is: 107,122.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,681.32 : 317,492.06 = 71,421.48 : x
  2. Step 2: Convert to fraction form
    211,681.32/317,492.06 = 71,421.48/x
  3. Step 3: Cross multiply
    211,681.32x = 317,492.06 × 71,421.48
  4. Step 4: Simplify right side
    211,681.32x = 22,675,752,813.45
  5. Step 5: Solve for x
    x = 22,675,752,813.45/211,681.32
  6. Step 6: Final answer
    x = 107,122.12

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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.