Home / 210,834.34-291,071.64-139,421.50

Finding the Fourth Proportional to 210,834.34, 291,071.64 and 139,421.50

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Solution

The fourth proportional to 210,834.34, 291,071.64 and 139,421.50 is: 192,481.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,834.34 : 291,071.64 = 139,421.50 : x
  2. Step 2: Convert to fraction form
    210,834.34/291,071.64 = 139,421.50/x
  3. Step 3: Cross multiply
    210,834.34x = 291,071.64 × 139,421.50
  4. Step 4: Simplify right side
    210,834.34x = 40,581,644,656.26
  5. Step 5: Solve for x
    x = 40,581,644,656.26/210,834.34
  6. Step 6: Final answer
    x = 192,481.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.