Home / 154,862.96-213,727-86,898.28

Finding the Fourth Proportional to 154,862.96, 213,727 and 86,898.28

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Solution

The fourth proportional to 154,862.96, 213,727 and 86,898.28 is: 119,928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,862.96 : 213,727 = 86,898.28 : x
  2. Step 2: Convert to fraction form
    154,862.96/213,727 = 86,898.28/x
  3. Step 3: Cross multiply
    154,862.96x = 213,727 × 86,898.28
  4. Step 4: Simplify right side
    154,862.96x = 18,572,508,689.56
  5. Step 5: Solve for x
    x = 18,572,508,689.56/154,862.96
  6. Step 6: Final answer
    x = 119,928.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.