Home / 261,110,967.47-391,669,181.93-76,881,931.73

Finding the Fourth Proportional to 261,110,967.47, 391,669,181.93 and 76,881,931.73

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Solution

The fourth proportional to 261,110,967.47, 391,669,181.93 and 76,881,931.73 is: 115,323,701.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,110,967.47 : 391,669,181.93 = 76,881,931.73 : x
  2. Step 2: Convert to fraction form
    261,110,967.47/391,669,181.93 = 76,881,931.73/x
  3. Step 3: Cross multiply
    261,110,967.47x = 391,669,181.93 × 76,881,931.73
  4. Step 4: Simplify right side
    261,110,967.47x = 30,112,283,306,481,976
  5. Step 5: Solve for x
    x = 30,112,283,306,481,976/261,110,967.47
  6. Step 6: Final answer
    x = 115,323,701.64

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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.