Home / 98,378,779.80-147,631,155.30-57,438,139.80

Finding the Fourth Proportional to 98,378,779.80, 147,631,155.30 and 57,438,139.80

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Solution

The fourth proportional to 98,378,779.80, 147,631,155.30 and 57,438,139.80 is: 86,193,983.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,378,779.80 : 147,631,155.30 = 57,438,139.80 : x
  2. Step 2: Convert to fraction form
    98,378,779.80/147,631,155.30 = 57,438,139.80/x
  3. Step 3: Cross multiply
    98,378,779.80x = 147,631,155.30 × 57,438,139.80
  4. Step 4: Simplify right side
    98,378,779.80x = 8,479,658,936,956,911
  5. Step 5: Solve for x
    x = 8,479,658,936,956,911/98,378,779.80
  6. Step 6: Final answer
    x = 86,193,983.64

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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.