Home / 86,184,966.30-129,277,449.45-78,248,780.70

Finding the Fourth Proportional to 86,184,966.30, 129,277,449.45 and 78,248,780.70

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Solution

The fourth proportional to 86,184,966.30, 129,277,449.45 and 78,248,780.70 is: 117,373,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,184,966.30 : 129,277,449.45 = 78,248,780.70 : x
  2. Step 2: Convert to fraction form
    86,184,966.30/129,277,449.45 = 78,248,780.70/x
  3. Step 3: Cross multiply
    86,184,966.30x = 129,277,449.45 × 78,248,780.70
  4. Step 4: Simplify right side
    86,184,966.30x = 10,115,802,791,468,386
  5. Step 5: Solve for x
    x = 10,115,802,791,468,386/86,184,966.30
  6. Step 6: Final answer
    x = 117,373,171.05

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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.