Home / 130,571,465.31-180,188,621.00-71,832,869.87

Finding the Fourth Proportional to 130,571,465.31, 180,188,621.00 and 71,832,869.87

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Solution

The fourth proportional to 130,571,465.31, 180,188,621.00 and 71,832,869.87 is: 99,129,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,571,465.31 : 180,188,621.00 = 71,832,869.87 : x
  2. Step 2: Convert to fraction form
    130,571,465.31/180,188,621.00 = 71,832,869.87/x
  3. Step 3: Cross multiply
    130,571,465.31x = 180,188,621.00 × 71,832,869.87
  4. Step 4: Simplify right side
    130,571,465.31x = 12,943,465,763,087,642
  5. Step 5: Solve for x
    x = 12,943,465,763,087,642/130,571,465.31
  6. Step 6: Final answer
    x = 99,129,359.79

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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.