Home / 151,389,278.16-208,917,287.82-81,774,659.40

Finding the Fourth Proportional to 151,389,278.16, 208,917,287.82 and 81,774,659.40

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Solution

The fourth proportional to 151,389,278.16, 208,917,287.82 and 81,774,659.40 is: 112,849,075.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389,278.16 : 208,917,287.82 = 81,774,659.40 : x
  2. Step 2: Convert to fraction form
    151,389,278.16/208,917,287.82 = 81,774,659.40/x
  3. Step 3: Cross multiply
    151,389,278.16x = 208,917,287.82 × 81,774,659.40
  4. Step 4: Simplify right side
    151,389,278.16x = 17,084,140,054,252,270
  5. Step 5: Solve for x
    x = 17,084,140,054,252,270/151,389,278.16
  6. Step 6: Final answer
    x = 112,849,075.32

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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.