Home / 90,287,999.60-135,431,999.40-89,784,114.80

Finding the Fourth Proportional to 90,287,999.60, 135,431,999.40 and 89,784,114.80

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Solution

The fourth proportional to 90,287,999.60, 135,431,999.40 and 89,784,114.80 is: 134,676,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,287,999.60 : 135,431,999.40 = 89,784,114.80 : x
  2. Step 2: Convert to fraction form
    90,287,999.60/135,431,999.40 = 89,784,114.80/x
  3. Step 3: Cross multiply
    90,287,999.60x = 135,431,999.40 × 89,784,114.80
  4. Step 4: Simplify right side
    90,287,999.60x = 12,159,642,181,723,132
  5. Step 5: Solve for x
    x = 12,159,642,181,723,132/90,287,999.60
  6. Step 6: Final answer
    x = 134,676,172.20

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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.