Home / 139,454,768.80-209,190,026.40-42,413,642.20

Finding the Fourth Proportional to 139,454,768.80, 209,190,026.40 and 42,413,642.20

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Solution

The fourth proportional to 139,454,768.80, 209,190,026.40 and 42,413,642.20 is: 63,622,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,454,768.80 : 209,190,026.40 = 42,413,642.20 : x
  2. Step 2: Convert to fraction form
    139,454,768.80/209,190,026.40 = 42,413,642.20/x
  3. Step 3: Cross multiply
    139,454,768.80x = 209,190,026.40 × 42,413,642.20
  4. Step 4: Simplify right side
    139,454,768.80x = 8,872,510,931,538,155
  5. Step 5: Solve for x
    x = 8,872,510,931,538,155/139,454,768.80
  6. Step 6: Final answer
    x = 63,622,857.85

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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.