Home / 85,537,420.20-128,054,187.90-80,554,559.40

Finding the Fourth Proportional to 85,537,420.20, 128,054,187.90 and 80,554,559.40

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Solution

The fourth proportional to 85,537,420.20, 128,054,187.90 and 80,554,559.40 is: 120,594,573.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,537,420.20 : 128,054,187.90 = 80,554,559.40 : x
  2. Step 2: Convert to fraction form
    85,537,420.20/128,054,187.90 = 80,554,559.40/x
  3. Step 3: Cross multiply
    85,537,420.20x = 128,054,187.90 × 80,554,559.40
  4. Step 4: Simplify right side
    85,537,420.20x = 10,315,348,685,609,312
  5. Step 5: Solve for x
    x = 10,315,348,685,609,312/85,537,420.20
  6. Step 6: Final answer
    x = 120,594,573.25

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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.