Home / 103,987.41-143,502.62-56,240.76

Finding the Fourth Proportional to 103,987.41, 143,502.62 and 56,240.76

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Solution

The fourth proportional to 103,987.41, 143,502.62 and 56,240.76 is: 77,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,987.41 : 143,502.62 = 56,240.76 : x
  2. Step 2: Convert to fraction form
    103,987.41/143,502.62 = 56,240.76/x
  3. Step 3: Cross multiply
    103,987.41x = 143,502.62 × 56,240.76
  4. Step 4: Simplify right side
    103,987.41x = 8,070,696,410.79
  5. Step 5: Solve for x
    x = 8,070,696,410.79/103,987.41
  6. Step 6: Final answer
    x = 77,612.25

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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.