Home / 153,128.48-211,333.92-89,487.68

Finding the Fourth Proportional to 153,128.48, 211,333.92 and 89,487.68

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Solution

The fourth proportional to 153,128.48, 211,333.92 and 89,487.68 is: 123,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,128.48 : 211,333.92 = 89,487.68 : x
  2. Step 2: Convert to fraction form
    153,128.48/211,333.92 = 89,487.68/x
  3. Step 3: Cross multiply
    153,128.48x = 211,333.92 × 89,487.68
  4. Step 4: Simplify right side
    153,128.48x = 18,911,782,206.11
  5. Step 5: Solve for x
    x = 18,911,782,206.11/153,128.48
  6. Step 6: Final answer
    x = 123,502.71

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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.