Home / 138,733,345.74-191,427,681.47-79,167,445.56

Finding the Fourth Proportional to 138,733,345.74, 191,427,681.47 and 79,167,445.56

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Solution

The fourth proportional to 138,733,345.74, 191,427,681.47 and 79,167,445.56 is: 109,237,187.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,733,345.74 : 191,427,681.47 = 79,167,445.56 : x
  2. Step 2: Convert to fraction form
    138,733,345.74/191,427,681.47 = 79,167,445.56/x
  3. Step 3: Cross multiply
    138,733,345.74x = 191,427,681.47 × 79,167,445.56
  4. Step 4: Simplify right side
    138,733,345.74x = 15,154,840,551,354,286
  5. Step 5: Solve for x
    x = 15,154,840,551,354,286/138,733,345.74
  6. Step 6: Final answer
    x = 109,237,187.86

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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.