Home / 154,752,120-213,557,921.28-85,136,002.56

Finding the Fourth Proportional to 154,752,120, 213,557,921.28 and 85,136,002.56

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Solution

The fourth proportional to 154,752,120, 213,557,921.28 and 85,136,002.56 is: 117,487,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,752,120 : 213,557,921.28 = 85,136,002.56 : x
  2. Step 2: Convert to fraction form
    154,752,120/213,557,921.28 = 85,136,002.56/x
  3. Step 3: Cross multiply
    154,752,120x = 213,557,921.28 × 85,136,002.56
  4. Step 4: Simplify right side
    154,752,120x = 18,181,467,732,802,360
  5. Step 5: Solve for x
    x = 18,181,467,732,802,360/154,752,120
  6. Step 6: Final answer
    x = 117,487,681.16

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1.5x scale

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.