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Finding the Fourth Proportional to 210,755.34, 290,849.94 and 120,124.98

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Solution

The fourth proportional to 210,755.34, 290,849.94 and 120,124.98 is: 165,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,755.34 : 290,849.94 = 120,124.98 : x
  2. Step 2: Convert to fraction form
    210,755.34/290,849.94 = 120,124.98/x
  3. Step 3: Cross multiply
    210,755.34x = 290,849.94 × 120,124.98
  4. Step 4: Simplify right side
    210,755.34x = 34,938,343,225.50
  5. Step 5: Solve for x
    x = 34,938,343,225.50/210,755.34
  6. Step 6: Final answer
    x = 165,776.79

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1.5x scale

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.