Home / 84,580,459.20-126,870,688.80-80,213,457.60

Finding the Fourth Proportional to 84,580,459.20, 126,870,688.80 and 80,213,457.60

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Solution

The fourth proportional to 84,580,459.20, 126,870,688.80 and 80,213,457.60 is: 120,320,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,580,459.20 : 126,870,688.80 = 80,213,457.60 : x
  2. Step 2: Convert to fraction form
    84,580,459.20/126,870,688.80 = 80,213,457.60/x
  3. Step 3: Cross multiply
    84,580,459.20x = 126,870,688.80 × 80,213,457.60
  4. Step 4: Simplify right side
    84,580,459.20x = 10,176,736,616,741,594
  5. Step 5: Solve for x
    x = 10,176,736,616,741,594/84,580,459.20
  6. Step 6: Final answer
    x = 120,320,186.40

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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.