Home / 128,988,361.76-178,001,282-70,252,059

Finding the Fourth Proportional to 128,988,361.76, 178,001,282 and 70,252,059

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Solution

The fourth proportional to 128,988,361.76, 178,001,282 and 70,252,059 is: 96,946,394.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,988,361.76 : 178,001,282 = 70,252,059 : x
  2. Step 2: Convert to fraction form
    128,988,361.76/178,001,282 = 70,252,059/x
  3. Step 3: Cross multiply
    128,988,361.76x = 178,001,282 × 70,252,059
  4. Step 4: Simplify right side
    128,988,361.76x = 12,504,956,565,139,638
  5. Step 5: Solve for x
    x = 12,504,956,565,139,638/128,988,361.76
  6. Step 6: Final answer
    x = 96,946,394.19

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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.