Home / 142,724,929.48-196,944,606.82-79,143,670.08

Finding the Fourth Proportional to 142,724,929.48, 196,944,606.82 and 79,143,670.08

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Solution

The fourth proportional to 142,724,929.48, 196,944,606.82 and 79,143,670.08 is: 109,209,505.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,724,929.48 : 196,944,606.82 = 79,143,670.08 : x
  2. Step 2: Convert to fraction form
    142,724,929.48/196,944,606.82 = 79,143,670.08/x
  3. Step 3: Cross multiply
    142,724,929.48x = 196,944,606.82 × 79,143,670.08
  4. Step 4: Simplify right side
    142,724,929.48x = 15,586,918,986,197,398
  5. Step 5: Solve for x
    x = 15,586,918,986,197,398/142,724,929.48
  6. Step 6: Final answer
    x = 109,209,505.61

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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.