Home / 137,604,213.78-189,891,358.86-74,878,172.58

Finding the Fourth Proportional to 137,604,213.78, 189,891,358.86 and 74,878,172.58

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Solution

The fourth proportional to 137,604,213.78, 189,891,358.86 and 74,878,172.58 is: 103,330,541.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,604,213.78 : 189,891,358.86 = 74,878,172.58 : x
  2. Step 2: Convert to fraction form
    137,604,213.78/189,891,358.86 = 74,878,172.58/x
  3. Step 3: Cross multiply
    137,604,213.78x = 189,891,358.86 × 74,878,172.58
  4. Step 4: Simplify right side
    137,604,213.78x = 14,218,717,940,169,792
  5. Step 5: Solve for x
    x = 14,218,717,940,169,792/137,604,213.78
  6. Step 6: Final answer
    x = 103,330,541.63

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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.