Home / 153,687,989.85-212,088,791.88-83,123,678.85

Finding the Fourth Proportional to 153,687,989.85, 212,088,791.88 and 83,123,678.85

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Solution

The fourth proportional to 153,687,989.85, 212,088,791.88 and 83,123,678.85 is: 114,710,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,687,989.85 : 212,088,791.88 = 83,123,678.85 : x
  2. Step 2: Convert to fraction form
    153,687,989.85/212,088,791.88 = 83,123,678.85/x
  3. Step 3: Cross multiply
    153,687,989.85x = 212,088,791.88 × 83,123,678.85
  4. Step 4: Simplify right side
    153,687,989.85x = 17,629,600,623,917,606
  5. Step 5: Solve for x
    x = 17,629,600,623,917,606/153,687,989.85
  6. Step 6: Final answer
    x = 114,710,333.85

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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.