Home / 153,420.68-211,669.80-89,713.38

Finding the Fourth Proportional to 153,420.68, 211,669.80 and 89,713.38

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Solution

The fourth proportional to 153,420.68, 211,669.80 and 89,713.38 is: 123,774.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,420.68 : 211,669.80 = 89,713.38 : x
  2. Step 2: Convert to fraction form
    153,420.68/211,669.80 = 89,713.38/x
  3. Step 3: Cross multiply
    153,420.68x = 211,669.80 × 89,713.38
  4. Step 4: Simplify right side
    153,420.68x = 18,989,613,201.92
  5. Step 5: Solve for x
    x = 18,989,613,201.92/153,420.68
  6. Step 6: Final answer
    x = 123,774.79

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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.