Home / 145,406,360.39-200,661,428.18-79,326,658.40

Finding the Fourth Proportional to 145,406,360.39, 200,661,428.18 and 79,326,658.40

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Solution

The fourth proportional to 145,406,360.39, 200,661,428.18 and 79,326,658.40 is: 109,471,143.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,406,360.39 : 200,661,428.18 = 79,326,658.40 : x
  2. Step 2: Convert to fraction form
    145,406,360.39/200,661,428.18 = 79,326,658.40/x
  3. Step 3: Cross multiply
    145,406,360.39x = 200,661,428.18 × 79,326,658.40
  4. Step 4: Simplify right side
    145,406,360.39x = 15,917,800,566,486,002
  5. Step 5: Solve for x
    x = 15,917,800,566,486,002/145,406,360.39
  6. Step 6: Final answer
    x = 109,471,143.66

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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.