Home / 139,521,761.40-209,282,642.10-42,476,698.20

Finding the Fourth Proportional to 139,521,761.40, 209,282,642.10 and 42,476,698.20

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Solution

The fourth proportional to 139,521,761.40, 209,282,642.10 and 42,476,698.20 is: 63,715,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,521,761.40 : 209,282,642.10 = 42,476,698.20 : x
  2. Step 2: Convert to fraction form
    139,521,761.40/209,282,642.10 = 42,476,698.20/x
  3. Step 3: Cross multiply
    139,521,761.40x = 209,282,642.10 × 42,476,698.20
  4. Step 4: Simplify right side
    139,521,761.40x = 8,889,635,626,980,315
  5. Step 5: Solve for x
    x = 8,889,635,626,980,315/139,521,761.40
  6. Step 6: Final answer
    x = 63,715,047.30

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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.