Home / 258,064.48-387,031.76-91,813.60

Finding the Fourth Proportional to 258,064.48, 387,031.76 and 91,813.60

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Solution

The fourth proportional to 258,064.48, 387,031.76 and 91,813.60 is: 137,697.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,064.48 : 387,031.76 = 91,813.60 : x
  2. Step 2: Convert to fraction form
    258,064.48/387,031.76 = 91,813.60/x
  3. Step 3: Cross multiply
    258,064.48x = 387,031.76 × 91,813.60
  4. Step 4: Simplify right side
    258,064.48x = 35,534,779,199.94
  5. Step 5: Solve for x
    x = 35,534,779,199.94/258,064.48
  6. Step 6: Final answer
    x = 137,697.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.