Home / 101,438,406-139,985,000.28-57,979,275.12

Finding the Fourth Proportional to 101,438,406, 139,985,000.28 and 57,979,275.12

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Solution

The fourth proportional to 101,438,406, 139,985,000.28 and 57,979,275.12 is: 80,011,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,438,406 : 139,985,000.28 = 57,979,275.12 : x
  2. Step 2: Convert to fraction form
    101,438,406/139,985,000.28 = 57,979,275.12/x
  3. Step 3: Cross multiply
    101,438,406x = 139,985,000.28 × 57,979,275.12
  4. Step 4: Simplify right side
    101,438,406x = 8,116,228,843,907,397
  5. Step 5: Solve for x
    x = 8,116,228,843,907,397/101,438,406
  6. Step 6: Final answer
    x = 80,011,399.67

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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.