Home / 142,130.82-213,307.66-99,156.79

Finding the Fourth Proportional to 142,130.82, 213,307.66 and 99,156.79

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Solution

The fourth proportional to 142,130.82, 213,307.66 and 99,156.79 is: 148,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,130.82 : 213,307.66 = 99,156.79 : x
  2. Step 2: Convert to fraction form
    142,130.82/213,307.66 = 99,156.79/x
  3. Step 3: Cross multiply
    142,130.82x = 213,307.66 × 99,156.79
  4. Step 4: Simplify right side
    142,130.82x = 21,150,902,848.01
  5. Step 5: Solve for x
    x = 21,150,902,848.01/142,130.82
  6. Step 6: Final answer
    x = 148,812.92

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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.