Home / 140,248,142.49-193,538,723.45-78,368,989.53

Finding the Fourth Proportional to 140,248,142.49, 193,538,723.45 and 78,368,989.53

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Solution

The fourth proportional to 140,248,142.49, 193,538,723.45 and 78,368,989.53 is: 108,147,130.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,248,142.49 : 193,538,723.45 = 78,368,989.53 : x
  2. Step 2: Convert to fraction form
    140,248,142.49/193,538,723.45 = 78,368,989.53/x
  3. Step 3: Cross multiply
    140,248,142.49x = 193,538,723.45 × 78,368,989.53
  4. Step 4: Simplify right side
    140,248,142.49x = 15,167,434,191,310,770
  5. Step 5: Solve for x
    x = 15,167,434,191,310,770/140,248,142.49
  6. Step 6: Final answer
    x = 108,147,130.66

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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.