Home / 157,139.24-216,880.26-100,548.68

Finding the Fourth Proportional to 157,139.24, 216,880.26 and 100,548.68

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Solution

The fourth proportional to 157,139.24, 216,880.26 and 100,548.68 is: 138,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,139.24 : 216,880.26 = 100,548.68 : x
  2. Step 2: Convert to fraction form
    157,139.24/216,880.26 = 100,548.68/x
  3. Step 3: Cross multiply
    157,139.24x = 216,880.26 × 100,548.68
  4. Step 4: Simplify right side
    157,139.24x = 21,807,023,861.06
  5. Step 5: Solve for x
    x = 21,807,023,861.06/157,139.24
  6. Step 6: Final answer
    x = 138,775.16

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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.