Home / 121,051,197.54-166,855,507.47-81,878,688.72

Finding the Fourth Proportional to 121,051,197.54, 166,855,507.47 and 81,878,688.72

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Solution

The fourth proportional to 121,051,197.54, 166,855,507.47 and 81,878,688.72 is: 112,860,594.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,051,197.54 : 166,855,507.47 = 81,878,688.72 : x
  2. Step 2: Convert to fraction form
    121,051,197.54/166,855,507.47 = 81,878,688.72/x
  3. Step 3: Cross multiply
    121,051,197.54x = 166,855,507.47 × 81,878,688.72
  4. Step 4: Simplify right side
    121,051,197.54x = 13,661,910,157,353,764
  5. Step 5: Solve for x
    x = 13,661,910,157,353,764/121,051,197.54
  6. Step 6: Final answer
    x = 112,860,594.81

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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.