Home / 142,454,421-196,587,113.94-80,573,427.72

Finding the Fourth Proportional to 142,454,421, 196,587,113.94 and 80,573,427.72

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Solution

The fourth proportional to 142,454,421, 196,587,113.94 and 80,573,427.72 is: 111,191,337.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,454,421 : 196,587,113.94 = 80,573,427.72 : x
  2. Step 2: Convert to fraction form
    142,454,421/196,587,113.94 = 80,573,427.72/x
  3. Step 3: Cross multiply
    142,454,421x = 196,587,113.94 × 80,573,427.72
  4. Step 4: Simplify right side
    142,454,421x = 15,839,697,615,727,994
  5. Step 5: Solve for x
    x = 15,839,697,615,727,994/142,454,421
  6. Step 6: Final answer
    x = 111,191,337.58

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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.