Home / 158,136,052.80-218,307,002.40-99,431,011.20

Finding the Fourth Proportional to 158,136,052.80, 218,307,002.40 and 99,431,011.20

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Solution

The fourth proportional to 158,136,052.80, 218,307,002.40 and 99,431,011.20 is: 137,264,625.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,136,052.80 : 218,307,002.40 = 99,431,011.20 : x
  2. Step 2: Convert to fraction form
    158,136,052.80/218,307,002.40 = 99,431,011.20/x
  3. Step 3: Cross multiply
    158,136,052.80x = 218,307,002.40 × 99,431,011.20
  4. Step 4: Simplify right side
    158,136,052.80x = 21,706,486,000,672,828
  5. Step 5: Solve for x
    x = 21,706,486,000,672,828/158,136,052.80
  6. Step 6: Final answer
    x = 137,264,625.09

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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.