Home / 90,350.12-135,417.65-68,090.10

Finding the Fourth Proportional to 90,350.12, 135,417.65 and 68,090.10

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Solution

The fourth proportional to 90,350.12, 135,417.65 and 68,090.10 is: 102,054.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,350.12 : 135,417.65 = 68,090.10 : x
  2. Step 2: Convert to fraction form
    90,350.12/135,417.65 = 68,090.10/x
  3. Step 3: Cross multiply
    90,350.12x = 135,417.65 × 68,090.10
  4. Step 4: Simplify right side
    90,350.12x = 9,220,600,989.81
  5. Step 5: Solve for x
    x = 9,220,600,989.81/90,350.12
  6. Step 6: Final answer
    x = 102,054.11

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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.