Home / 121,353,128.40-182,029,692.60-80,538,459.60

Finding the Fourth Proportional to 121,353,128.40, 182,029,692.60 and 80,538,459.60

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Solution

The fourth proportional to 121,353,128.40, 182,029,692.60 and 80,538,459.60 is: 120,807,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,353,128.40 : 182,029,692.60 = 80,538,459.60 : x
  2. Step 2: Convert to fraction form
    121,353,128.40/182,029,692.60 = 80,538,459.60/x
  3. Step 3: Cross multiply
    121,353,128.40x = 182,029,692.60 × 80,538,459.60
  4. Step 4: Simplify right side
    121,353,128.40x = 14,660,391,043,465,518
  5. Step 5: Solve for x
    x = 14,660,391,043,465,518/121,353,128.40
  6. Step 6: Final answer
    x = 120,807,689.40

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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.