Home / 103,717.47-143,132.99-63,430.50

Finding the Fourth Proportional to 103,717.47, 143,132.99 and 63,430.50

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Solution

The fourth proportional to 103,717.47, 143,132.99 and 63,430.50 is: 87,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,717.47 : 143,132.99 = 63,430.50 : x
  2. Step 2: Convert to fraction form
    103,717.47/143,132.99 = 63,430.50/x
  3. Step 3: Cross multiply
    103,717.47x = 143,132.99 × 63,430.50
  4. Step 4: Simplify right side
    103,717.47x = 9,078,997,122.20
  5. Step 5: Solve for x
    x = 9,078,997,122.20/103,717.47
  6. Step 6: Final answer
    x = 87,535.85

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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.