Home / 138,759,376.83-208,151,908.40-45,386,878.48

Finding the Fourth Proportional to 138,759,376.83, 208,151,908.40 and 45,386,878.48

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Solution

The fourth proportional to 138,759,376.83, 208,151,908.40 and 45,386,878.48 is: 68,084,518.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,759,376.83 : 208,151,908.40 = 45,386,878.48 : x
  2. Step 2: Convert to fraction form
    138,759,376.83/208,151,908.40 = 45,386,878.48/x
  3. Step 3: Cross multiply
    138,759,376.83x = 208,151,908.40 × 45,386,878.48
  4. Step 4: Simplify right side
    138,759,376.83x = 9,447,365,371,930,890
  5. Step 5: Solve for x
    x = 9,447,365,371,930,890/138,759,376.83
  6. Step 6: Final answer
    x = 68,084,518.59

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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.