Home / 136,901,012.36-205,213,259.09-85,818,835.40

Finding the Fourth Proportional to 136,901,012.36, 205,213,259.09 and 85,818,835.40

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Solution

The fourth proportional to 136,901,012.36, 205,213,259.09 and 85,818,835.40 is: 128,641,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,901,012.36 : 205,213,259.09 = 85,818,835.40 : x
  2. Step 2: Convert to fraction form
    136,901,012.36/205,213,259.09 = 85,818,835.40/x
  3. Step 3: Cross multiply
    136,901,012.36x = 205,213,259.09 × 85,818,835.40
  4. Step 4: Simplify right side
    136,901,012.36x = 17,611,162,902,930,744
  5. Step 5: Solve for x
    x = 17,611,162,902,930,744/136,901,012.36
  6. Step 6: Final answer
    x = 128,641,582.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.