Home / 151,389,275.90-208,917,284.70-81,774,657.16

Finding the Fourth Proportional to 151,389,275.90, 208,917,284.70 and 81,774,657.16

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Solution

The fourth proportional to 151,389,275.90, 208,917,284.70 and 81,774,657.16 is: 112,849,072.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,275.90 : 208,917,284.70 = 81,774,657.16 : x
  2. Step 2: Convert to fraction form
    151,389,275.90/208,917,284.70 = 81,774,657.16/x
  3. Step 3: Cross multiply
    151,389,275.90x = 208,917,284.70 × 81,774,657.16
  4. Step 4: Simplify right side
    151,389,275.90x = 17,084,139,330,924,976
  5. Step 5: Solve for x
    x = 17,084,139,330,924,976/151,389,275.90
  6. Step 6: Final answer
    x = 112,849,072.23

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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.