Home / 138,105,237.40-190,571,658.87-76,221,590.20

Finding the Fourth Proportional to 138,105,237.40, 190,571,658.87 and 76,221,590.20

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Solution

The fourth proportional to 138,105,237.40, 190,571,658.87 and 76,221,590.20 is: 105,178,305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105,237.40 : 190,571,658.87 = 76,221,590.20 : x
  2. Step 2: Convert to fraction form
    138,105,237.40/190,571,658.87 = 76,221,590.20/x
  3. Step 3: Cross multiply
    138,105,237.40x = 190,571,658.87 × 76,221,590.20
  4. Step 4: Simplify right side
    138,105,237.40x = 14,525,674,886,123,336
  5. Step 5: Solve for x
    x = 14,525,674,886,123,336/138,105,237.40
  6. Step 6: Final answer
    x = 105,178,305.76

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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.