Home / 90,231.12-135,346.07-70,526.25

Finding the Fourth Proportional to 90,231.12, 135,346.07 and 70,526.25

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Solution

The fourth proportional to 90,231.12, 135,346.07 and 70,526.25 is: 105,788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,231.12 : 135,346.07 = 70,526.25 : x
  2. Step 2: Convert to fraction form
    90,231.12/135,346.07 = 70,526.25/x
  3. Step 3: Cross multiply
    90,231.12x = 135,346.07 × 70,526.25
  4. Step 4: Simplify right side
    90,231.12x = 9,545,450,416.71
  5. Step 5: Solve for x
    x = 9,545,450,416.71/90,231.12
  6. Step 6: Final answer
    x = 105,788.89

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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.