Home / 131,138,658.40-196,707,987.60-127,779,426.40

Finding the Fourth Proportional to 131,138,658.40, 196,707,987.60 and 127,779,426.40

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Solution

The fourth proportional to 131,138,658.40, 196,707,987.60 and 127,779,426.40 is: 191,669,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,138,658.40 : 196,707,987.60 = 127,779,426.40 : x
  2. Step 2: Convert to fraction form
    131,138,658.40/196,707,987.60 = 127,779,426.40/x
  3. Step 3: Cross multiply
    131,138,658.40x = 196,707,987.60 × 127,779,426.40
  4. Step 4: Simplify right side
    131,138,658.40x = 25,135,233,823,826,312
  5. Step 5: Solve for x
    x = 25,135,233,823,826,312/131,138,658.40
  6. Step 6: Final answer
    x = 191,669,139.60

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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.