Home / 100,509,443.14-138,706,399.59-55,857,296.93

Finding the Fourth Proportional to 100,509,443.14, 138,706,399.59 and 55,857,296.93

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Solution

The fourth proportional to 100,509,443.14, 138,706,399.59 and 55,857,296.93 is: 77,084,941.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,509,443.14 : 138,706,399.59 = 55,857,296.93 : x
  2. Step 2: Convert to fraction form
    100,509,443.14/138,706,399.59 = 55,857,296.93/x
  3. Step 3: Cross multiply
    100,509,443.14x = 138,706,399.59 × 55,857,296.93
  4. Step 4: Simplify right side
    100,509,443.14x = 7,747,764,547,086,863
  5. Step 5: Solve for x
    x = 7,747,764,547,086,863/100,509,443.14
  6. Step 6: Final answer
    x = 77,084,941.52

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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.