Home / 128,775,948.88-193,164,032.40-31,731,669.76

Finding the Fourth Proportional to 128,775,948.88, 193,164,032.40 and 31,731,669.76

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Solution

The fourth proportional to 128,775,948.88, 193,164,032.40 and 31,731,669.76 is: 47,597,531.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,775,948.88 : 193,164,032.40 = 31,731,669.76 : x
  2. Step 2: Convert to fraction form
    128,775,948.88/193,164,032.40 = 31,731,669.76/x
  3. Step 3: Cross multiply
    128,775,948.88x = 193,164,032.40 × 31,731,669.76
  4. Step 4: Simplify right side
    128,775,948.88x = 6,129,417,285,626,741
  5. Step 5: Solve for x
    x = 6,129,417,285,626,741/128,775,948.88
  6. Step 6: Final answer
    x = 47,597,531.52

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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.