Home / 129,265,030.51-178,440,784.66-86,903,158.31

Finding the Fourth Proportional to 129,265,030.51, 178,440,784.66 and 86,903,158.31

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Solution

The fourth proportional to 129,265,030.51, 178,440,784.66 and 86,903,158.31 is: 119,963,362.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,265,030.51 : 178,440,784.66 = 86,903,158.31 : x
  2. Step 2: Convert to fraction form
    129,265,030.51/178,440,784.66 = 86,903,158.31/x
  3. Step 3: Cross multiply
    129,265,030.51x = 178,440,784.66 × 86,903,158.31
  4. Step 4: Simplify right side
    129,265,030.51x = 15,507,067,757,976,456
  5. Step 5: Solve for x
    x = 15,507,067,757,976,456/129,265,030.51
  6. Step 6: Final answer
    x = 119,963,362.84

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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.