Home / 151,389,433.69-208,917,502.59-81,774,815.20

Finding the Fourth Proportional to 151,389,433.69, 208,917,502.59 and 81,774,815.20

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Solution

The fourth proportional to 151,389,433.69, 208,917,502.59 and 81,774,815.20 is: 112,849,290.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,433.69 : 208,917,502.59 = 81,774,815.20 : x
  2. Step 2: Convert to fraction form
    151,389,433.69/208,917,502.59 = 81,774,815.20/x
  3. Step 3: Cross multiply
    151,389,433.69x = 208,917,502.59 × 81,774,815.20
  4. Step 4: Simplify right side
    151,389,433.69x = 17,084,190,166,342,772
  5. Step 5: Solve for x
    x = 17,084,190,166,342,772/151,389,433.69
  6. Step 6: Final answer
    x = 112,849,290.40

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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.