Home / 139,521,781.40-209,282,672.10-42,476,718.20

Finding the Fourth Proportional to 139,521,781.40, 209,282,672.10 and 42,476,718.20

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Solution

The fourth proportional to 139,521,781.40, 209,282,672.10 and 42,476,718.20 is: 63,715,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,521,781.40 : 209,282,672.10 = 42,476,718.20 : x
  2. Step 2: Convert to fraction form
    139,521,781.40/209,282,672.10 = 42,476,718.20/x
  3. Step 3: Cross multiply
    139,521,781.40x = 209,282,672.10 × 42,476,718.20
  4. Step 4: Simplify right side
    139,521,781.40x = 8,889,641,086,934,703
  5. Step 5: Solve for x
    x = 8,889,641,086,934,703/139,521,781.40
  6. Step 6: Final answer
    x = 63,715,077.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.