Home / 86,184,037.80-129,276,056.70-78,247,852.20

Finding the Fourth Proportional to 86,184,037.80, 129,276,056.70 and 78,247,852.20

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Solution

The fourth proportional to 86,184,037.80, 129,276,056.70 and 78,247,852.20 is: 117,371,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,184,037.80 : 129,276,056.70 = 78,247,852.20 : x
  2. Step 2: Convert to fraction form
    86,184,037.80/129,276,056.70 = 78,247,852.20/x
  3. Step 3: Cross multiply
    86,184,037.80x = 129,276,056.70 × 78,247,852.20
  4. Step 4: Simplify right side
    86,184,037.80x = 10,115,573,777,660,420
  5. Step 5: Solve for x
    x = 10,115,573,777,660,420/86,184,037.80
  6. Step 6: Final answer
    x = 117,371,778.30

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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.