Home / 138,660,979.07-191,349,812.54-76,779,989.03

Finding the Fourth Proportional to 138,660,979.07, 191,349,812.54 and 76,779,989.03

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Solution

The fourth proportional to 138,660,979.07, 191,349,812.54 and 76,779,989.03 is: 105,955,089.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,660,979.07 : 191,349,812.54 = 76,779,989.03 : x
  2. Step 2: Convert to fraction form
    138,660,979.07/191,349,812.54 = 76,779,989.03/x
  3. Step 3: Cross multiply
    138,660,979.07x = 191,349,812.54 × 76,779,989.03
  4. Step 4: Simplify right side
    138,660,979.07x = 14,691,836,507,713,756
  5. Step 5: Solve for x
    x = 14,691,836,507,713,756/138,660,979.07
  6. Step 6: Final answer
    x = 105,955,089.93

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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.