Home / 139,926,952.32-193,098,689.28-78,047,242.08

Finding the Fourth Proportional to 139,926,952.32, 193,098,689.28 and 78,047,242.08

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Solution

The fourth proportional to 139,926,952.32, 193,098,689.28 and 78,047,242.08 is: 107,704,912.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,926,952.32 : 193,098,689.28 = 78,047,242.08 : x
  2. Step 2: Convert to fraction form
    139,926,952.32/193,098,689.28 = 78,047,242.08/x
  3. Step 3: Cross multiply
    139,926,952.32x = 193,098,689.28 × 78,047,242.08
  4. Step 4: Simplify right side
    139,926,952.32x = 15,070,820,147,566,860
  5. Step 5: Solve for x
    x = 15,070,820,147,566,860/139,926,952.32
  6. Step 6: Final answer
    x = 107,704,912.44

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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.