Home / 210,165,834.78-290,046,779.37-117,364,270.86

Finding the Fourth Proportional to 210,165,834.78, 290,046,779.37 and 117,364,270.86

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Solution

The fourth proportional to 210,165,834.78, 290,046,779.37 and 117,364,270.86 is: 161,972,705.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,165,834.78 : 290,046,779.37 = 117,364,270.86 : x
  2. Step 2: Convert to fraction form
    210,165,834.78/290,046,779.37 = 117,364,270.86/x
  3. Step 3: Cross multiply
    210,165,834.78x = 290,046,779.37 × 117,364,270.86
  4. Step 4: Simplify right side
    210,165,834.78x = 34,041,128,776,051,340
  5. Step 5: Solve for x
    x = 34,041,128,776,051,340/210,165,834.78
  6. Step 6: Final answer
    x = 161,972,705.09

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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.