Home / 138,971,954.72-208,386,685.25-73,428,339.75

Finding the Fourth Proportional to 138,971,954.72, 208,386,685.25 and 73,428,339.75

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Solution

The fourth proportional to 138,971,954.72, 208,386,685.25 and 73,428,339.75 is: 110,104,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,971,954.72 : 208,386,685.25 = 73,428,339.75 : x
  2. Step 2: Convert to fraction form
    138,971,954.72/208,386,685.25 = 73,428,339.75/x
  3. Step 3: Cross multiply
    138,971,954.72x = 208,386,685.25 × 73,428,339.75
  4. Step 4: Simplify right side
    138,971,954.72x = 15,301,488,323,821,528
  5. Step 5: Solve for x
    x = 15,301,488,323,821,528/138,971,954.72
  6. Step 6: Final answer
    x = 110,104,865.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.