Home / 145,977.45-201,448.94-78,909.45

Finding the Fourth Proportional to 145,977.45, 201,448.94 and 78,909.45

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Solution

The fourth proportional to 145,977.45, 201,448.94 and 78,909.45 is: 108,895.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,977.45 : 201,448.94 = 78,909.45 : x
  2. Step 2: Convert to fraction form
    145,977.45/201,448.94 = 78,909.45/x
  3. Step 3: Cross multiply
    145,977.45x = 201,448.94 × 78,909.45
  4. Step 4: Simplify right side
    145,977.45x = 15,896,224,663.94
  5. Step 5: Solve for x
    x = 15,896,224,663.94/145,977.45
  6. Step 6: Final answer
    x = 108,895.07

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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.