Home / 100,613.84-138,838.96-58,175.10

Finding the Fourth Proportional to 100,613.84, 138,838.96 and 58,175.10

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Solution

The fourth proportional to 100,613.84, 138,838.96 and 58,175.10 is: 80,276.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,613.84 : 138,838.96 = 58,175.10 : x
  2. Step 2: Convert to fraction form
    100,613.84/138,838.96 = 58,175.10/x
  3. Step 3: Cross multiply
    100,613.84x = 138,838.96 × 58,175.10
  4. Step 4: Simplify right side
    100,613.84x = 8,076,970,381.90
  5. Step 5: Solve for x
    x = 8,076,970,381.90/100,613.84
  6. Step 6: Final answer
    x = 80,276.93

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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.