Home / 130,571,463.81-180,188,618.93-71,832,868.37

Finding the Fourth Proportional to 130,571,463.81, 180,188,618.93 and 71,832,868.37

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Solution

The fourth proportional to 130,571,463.81, 180,188,618.93 and 71,832,868.37 is: 99,129,357.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,571,463.81 : 180,188,618.93 = 71,832,868.37 : x
  2. Step 2: Convert to fraction form
    130,571,463.81/180,188,618.93 = 71,832,868.37/x
  3. Step 3: Cross multiply
    130,571,463.81x = 180,188,618.93 × 71,832,868.37
  4. Step 4: Simplify right side
    130,571,463.81x = 12,943,465,344,110,672
  5. Step 5: Solve for x
    x = 12,943,465,344,110,672/130,571,463.81
  6. Step 6: Final answer
    x = 99,129,357.72

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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.