Home / 138,867.02-191,636.07-75,204.80

Finding the Fourth Proportional to 138,867.02, 191,636.07 and 75,204.80

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Solution

The fourth proportional to 138,867.02, 191,636.07 and 75,204.80 is: 103,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,867.02 : 191,636.07 = 75,204.80 : x
  2. Step 2: Convert to fraction form
    138,867.02/191,636.07 = 75,204.80/x
  3. Step 3: Cross multiply
    138,867.02x = 191,636.07 × 75,204.80
  4. Step 4: Simplify right side
    138,867.02x = 14,411,952,317.14
  5. Step 5: Solve for x
    x = 14,411,952,317.14/138,867.02
  6. Step 6: Final answer
    x = 103,782.40

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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.