Home / 151,390,712.19-208,919,274.34-81,776,123.82

Finding the Fourth Proportional to 151,390,712.19, 208,919,274.34 and 81,776,123.82

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Solution

The fourth proportional to 151,390,712.19, 208,919,274.34 and 81,776,123.82 is: 112,851,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,390,712.19 : 208,919,274.34 = 81,776,123.82 : x
  2. Step 2: Convert to fraction form
    151,390,712.19/208,919,274.34 = 81,776,123.82/x
  3. Step 3: Cross multiply
    151,390,712.19x = 208,919,274.34 × 81,776,123.82
  4. Step 4: Simplify right side
    151,390,712.19x = 17,084,608,447,539,128
  5. Step 5: Solve for x
    x = 17,084,608,447,539,128/151,390,712.19
  6. Step 6: Final answer
    x = 112,851,100.31

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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.