Home / 136,900,536.48-205,212,547.44-85,818,359.52

Finding the Fourth Proportional to 136,900,536.48, 205,212,547.44 and 85,818,359.52

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Solution

The fourth proportional to 136,900,536.48, 205,212,547.44 and 85,818,359.52 is: 128,640,870.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,900,536.48 : 205,212,547.44 = 85,818,359.52 : x
  2. Step 2: Convert to fraction form
    136,900,536.48/205,212,547.44 = 85,818,359.52/x
  3. Step 3: Cross multiply
    136,900,536.48x = 205,212,547.44 × 85,818,359.52
  4. Step 4: Simplify right side
    136,900,536.48x = 17,611,004,174,220,974
  5. Step 5: Solve for x
    x = 17,611,004,174,220,974/136,900,536.48
  6. Step 6: Final answer
    x = 128,640,870.42

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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.