Home / 103,987.32-143,502.51-56,240.66

Finding the Fourth Proportional to 103,987.32, 143,502.51 and 56,240.66

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Solution

The fourth proportional to 103,987.32, 143,502.51 and 56,240.66 is: 77,612.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,987.32 : 143,502.51 = 56,240.66 : x
  2. Step 2: Convert to fraction form
    103,987.32/143,502.51 = 56,240.66/x
  3. Step 3: Cross multiply
    103,987.32x = 143,502.51 × 56,240.66
  4. Step 4: Simplify right side
    103,987.32x = 8,070,675,156.54
  5. Step 5: Solve for x
    x = 8,070,675,156.54/103,987.32
  6. Step 6: Final answer
    x = 77,612.11

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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.