Home / 84,200,859.60-126,301,289.40-71,871,428.40

Finding the Fourth Proportional to 84,200,859.60, 126,301,289.40 and 71,871,428.40

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Solution

The fourth proportional to 84,200,859.60, 126,301,289.40 and 71,871,428.40 is: 107,807,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,200,859.60 : 126,301,289.40 = 71,871,428.40 : x
  2. Step 2: Convert to fraction form
    84,200,859.60/126,301,289.40 = 71,871,428.40/x
  3. Step 3: Cross multiply
    84,200,859.60x = 126,301,289.40 × 71,871,428.40
  4. Step 4: Simplify right side
    84,200,859.60x = 9,077,454,077,939,780
  5. Step 5: Solve for x
    x = 9,077,454,077,939,780/84,200,859.60
  6. Step 6: Final answer
    x = 107,807,142.60

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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.