Home / 153,486,040.56-211,811,286.24-83,871,420.72

Finding the Fourth Proportional to 153,486,040.56, 211,811,286.24 and 83,871,420.72

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Solution

The fourth proportional to 153,486,040.56, 211,811,286.24 and 83,871,420.72 is: 115,742,861.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,486,040.56 : 211,811,286.24 = 83,871,420.72 : x
  2. Step 2: Convert to fraction form
    153,486,040.56/211,811,286.24 = 83,871,420.72/x
  3. Step 3: Cross multiply
    153,486,040.56x = 211,811,286.24 × 83,871,420.72
  4. Step 4: Simplify right side
    153,486,040.56x = 17,764,913,501,479,388
  5. Step 5: Solve for x
    x = 17,764,913,501,479,388/153,486,040.56
  6. Step 6: Final answer
    x = 115,742,861.28

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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.