Home / 128,817,891.55-177,764,640.01-70,079,051.89

Finding the Fourth Proportional to 128,817,891.55, 177,764,640.01 and 70,079,051.89

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Solution

The fourth proportional to 128,817,891.55, 177,764,640.01 and 70,079,051.89 is: 96,706,888.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,817,891.55 : 177,764,640.01 = 70,079,051.89 : x
  2. Step 2: Convert to fraction form
    128,817,891.55/177,764,640.01 = 70,079,051.89/x
  3. Step 3: Cross multiply
    128,817,891.55x = 177,764,640.01 × 70,079,051.89
  4. Step 4: Simplify right side
    128,817,891.55x = 12,457,577,431,467,960
  5. Step 5: Solve for x
    x = 12,457,577,431,467,960/128,817,891.55
  6. Step 6: Final answer
    x = 96,706,888.16

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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.