Home / 86,184,415.80-129,276,623.70-78,248,230.20

Finding the Fourth Proportional to 86,184,415.80, 129,276,623.70 and 78,248,230.20

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Solution

The fourth proportional to 86,184,415.80, 129,276,623.70 and 78,248,230.20 is: 117,372,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,184,415.80 : 129,276,623.70 = 78,248,230.20 : x
  2. Step 2: Convert to fraction form
    86,184,415.80/129,276,623.70 = 78,248,230.20/x
  3. Step 3: Cross multiply
    86,184,415.80x = 129,276,623.70 × 78,248,230.20
  4. Step 4: Simplify right side
    86,184,415.80x = 10,115,667,010,756,376
  5. Step 5: Solve for x
    x = 10,115,667,010,756,376/86,184,415.80
  6. Step 6: Final answer
    x = 117,372,345.30

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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.