Home / 153,687,989.35-212,088,791.19-83,123,678.35

Finding the Fourth Proportional to 153,687,989.35, 212,088,791.19 and 83,123,678.35

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Solution

The fourth proportional to 153,687,989.35, 212,088,791.19 and 83,123,678.35 is: 114,710,333.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,687,989.35 : 212,088,791.19 = 83,123,678.35 : x
  2. Step 2: Convert to fraction form
    153,687,989.35/212,088,791.19 = 83,123,678.35/x
  3. Step 3: Cross multiply
    153,687,989.35x = 212,088,791.19 × 83,123,678.35
  4. Step 4: Simplify right side
    153,687,989.35x = 17,629,600,460,517,872
  5. Step 5: Solve for x
    x = 17,629,600,460,517,872/153,687,989.35
  6. Step 6: Final answer
    x = 114,710,333.16

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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.