Home / 128,897,929.77-193,345,001.55-31,853,634.75

Finding the Fourth Proportional to 128,897,929.77, 193,345,001.55 and 31,853,634.75

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Solution

The fourth proportional to 128,897,929.77, 193,345,001.55 and 31,853,634.75 is: 47,779,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,929.77 : 193,345,001.55 = 31,853,634.75 : x
  2. Step 2: Convert to fraction form
    128,897,929.77/193,345,001.55 = 31,853,634.75/x
  3. Step 3: Cross multiply
    128,897,929.77x = 193,345,001.55 × 31,853,634.75
  4. Step 4: Simplify right side
    128,897,929.77x = 6,158,741,060,111,884
  5. Step 5: Solve for x
    x = 6,158,741,060,111,884/128,897,929.77
  6. Step 6: Final answer
    x = 47,779,984.30

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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.