Home / 139,919,661.09-209,871,924.75-42,875,648.91

Finding the Fourth Proportional to 139,919,661.09, 209,871,924.75 and 42,875,648.91

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Solution

The fourth proportional to 139,919,661.09, 209,871,924.75 and 42,875,648.91 is: 64,311,154.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,919,661.09 : 209,871,924.75 = 42,875,648.91 : x
  2. Step 2: Convert to fraction form
    139,919,661.09/209,871,924.75 = 42,875,648.91/x
  3. Step 3: Cross multiply
    139,919,661.09x = 209,871,924.75 × 42,875,648.91
  4. Step 4: Simplify right side
    139,919,661.09x = 8,998,394,961,646,939
  5. Step 5: Solve for x
    x = 8,998,394,961,646,939/139,919,661.09
  6. Step 6: Final answer
    x = 64,311,154.64

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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.