Home / 268,722,969.12-403,148,421-86,970,147.12

Finding the Fourth Proportional to 268,722,969.12, 403,148,421 and 86,970,147.12

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Solution

The fourth proportional to 268,722,969.12, 403,148,421 and 86,970,147.12 is: 130,475,923.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,722,969.12 : 403,148,421 = 86,970,147.12 : x
  2. Step 2: Convert to fraction form
    268,722,969.12/403,148,421 = 86,970,147.12/x
  3. Step 3: Cross multiply
    268,722,969.12x = 403,148,421 × 86,970,147.12
  4. Step 4: Simplify right side
    268,722,969.12x = 35,061,877,485,565,700
  5. Step 5: Solve for x
    x = 35,061,877,485,565,700/268,722,969.12
  6. Step 6: Final answer
    x = 130,475,923.22

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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.