Home / 91,845,379.20-137,768,068.80-76,840,809.60

Finding the Fourth Proportional to 91,845,379.20, 137,768,068.80 and 76,840,809.60

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Solution

The fourth proportional to 91,845,379.20, 137,768,068.80 and 76,840,809.60 is: 115,261,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,845,379.20 : 137,768,068.80 = 76,840,809.60 : x
  2. Step 2: Convert to fraction form
    91,845,379.20/137,768,068.80 = 76,840,809.60/x
  3. Step 3: Cross multiply
    91,845,379.20x = 137,768,068.80 × 76,840,809.60
  4. Step 4: Simplify right side
    91,845,379.20x = 10,586,209,943,620,500
  5. Step 5: Solve for x
    x = 10,586,209,943,620,500/91,845,379.20
  6. Step 6: Final answer
    x = 115,261,214.40

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1.5x scale

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.