Home / 102,921,962.20-142,036,939.74-61,667,968.12

Finding the Fourth Proportional to 102,921,962.20, 142,036,939.74 and 61,667,968.12

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Solution

The fourth proportional to 102,921,962.20, 142,036,939.74 and 61,667,968.12 is: 85,104,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,921,962.20 : 142,036,939.74 = 61,667,968.12 : x
  2. Step 2: Convert to fraction form
    102,921,962.20/142,036,939.74 = 61,667,968.12/x
  3. Step 3: Cross multiply
    102,921,962.20x = 142,036,939.74 × 61,667,968.12
  4. Step 4: Simplify right side
    102,921,962.20x = 8,759,129,471,748,681
  5. Step 5: Solve for x
    x = 8,759,129,471,748,681/102,921,962.20
  6. Step 6: Final answer
    x = 85,104,571.31

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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.