Home / 153,384.36-211,655.34-89,709.72

Finding the Fourth Proportional to 153,384.36, 211,655.34 and 89,709.72

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Solution

The fourth proportional to 153,384.36, 211,655.34 and 89,709.72 is: 123,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,384.36 : 211,655.34 = 89,709.72 : x
  2. Step 2: Convert to fraction form
    153,384.36/211,655.34 = 89,709.72/x
  3. Step 3: Cross multiply
    153,384.36x = 211,655.34 × 89,709.72
  4. Step 4: Simplify right side
    153,384.36x = 18,987,541,287.90
  5. Step 5: Solve for x
    x = 18,987,541,287.90/153,384.36
  6. Step 6: Final answer
    x = 123,790.60

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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.