Home / 100,856.05-151,284.08-65,426.65

Finding the Fourth Proportional to 100,856.05, 151,284.08 and 65,426.65

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Solution

The fourth proportional to 100,856.05, 151,284.08 and 65,426.65 is: 98,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,856.05 : 151,284.08 = 65,426.65 : x
  2. Step 2: Convert to fraction form
    100,856.05/151,284.08 = 65,426.65/x
  3. Step 3: Cross multiply
    100,856.05x = 151,284.08 × 65,426.65
  4. Step 4: Simplify right side
    100,856.05x = 9,898,010,225.60
  5. Step 5: Solve for x
    x = 9,898,010,225.60/100,856.05
  6. Step 6: Final answer
    x = 98,139.98

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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.