Home / 151,389,430.07-208,917,497.59-81,774,811.58

Finding the Fourth Proportional to 151,389,430.07, 208,917,497.59 and 81,774,811.58

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Solution

The fourth proportional to 151,389,430.07, 208,917,497.59 and 81,774,811.58 is: 112,849,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,430.07 : 208,917,497.59 = 81,774,811.58 : x
  2. Step 2: Convert to fraction form
    151,389,430.07/208,917,497.59 = 81,774,811.58/x
  3. Step 3: Cross multiply
    151,389,430.07x = 208,917,497.59 × 81,774,811.58
  4. Step 4: Simplify right side
    151,389,430.07x = 17,084,188,999,938,330
  5. Step 5: Solve for x
    x = 17,084,188,999,938,330/151,389,430.07
  6. Step 6: Final answer
    x = 112,849,285.40

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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.