Home / 142,182,129.32-196,212,064.03-79,459,274.13

Finding the Fourth Proportional to 142,182,129.32, 196,212,064.03 and 79,459,274.13

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Solution

The fourth proportional to 142,182,129.32, 196,212,064.03 and 79,459,274.13 is: 109,654,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,182,129.32 : 196,212,064.03 = 79,459,274.13 : x
  2. Step 2: Convert to fraction form
    142,182,129.32/196,212,064.03 = 79,459,274.13/x
  3. Step 3: Cross multiply
    142,182,129.32x = 196,212,064.03 × 79,459,274.13
  4. Step 4: Simplify right side
    142,182,129.32x = 15,590,868,182,975,586
  5. Step 5: Solve for x
    x = 15,590,868,182,975,586/142,182,129.32
  6. Step 6: Final answer
    x = 109,654,203.78

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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.