Home / 84,528,000.20-126,792,000.30-78,817,305.80

Finding the Fourth Proportional to 84,528,000.20, 126,792,000.30 and 78,817,305.80

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Solution

The fourth proportional to 84,528,000.20, 126,792,000.30 and 78,817,305.80 is: 118,225,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,528,000.20 : 126,792,000.30 = 78,817,305.80 : x
  2. Step 2: Convert to fraction form
    84,528,000.20/126,792,000.30 = 78,817,305.80/x
  3. Step 3: Cross multiply
    84,528,000.20x = 126,792,000.30 × 78,817,305.80
  4. Step 4: Simplify right side
    84,528,000.20x = 9,993,403,860,638,792
  5. Step 5: Solve for x
    x = 9,993,403,860,638,792/84,528,000.20
  6. Step 6: Final answer
    x = 118,225,958.70

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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.