Home / 136,038.48-187,698.24-79,417.32

Finding the Fourth Proportional to 136,038.48, 187,698.24 and 79,417.32

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Solution

The fourth proportional to 136,038.48, 187,698.24 and 79,417.32 is: 109,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,038.48 : 187,698.24 = 79,417.32 : x
  2. Step 2: Convert to fraction form
    136,038.48/187,698.24 = 79,417.32/x
  3. Step 3: Cross multiply
    136,038.48x = 187,698.24 × 79,417.32
  4. Step 4: Simplify right side
    136,038.48x = 14,906,491,189.52
  5. Step 5: Solve for x
    x = 14,906,491,189.52/136,038.48
  6. Step 6: Final answer
    x = 109,575.55

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1.5x scale

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.