Home / 103,540.48-142,851.51-84,387.35

Finding the Fourth Proportional to 103,540.48, 142,851.51 and 84,387.35

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Solution

The fourth proportional to 103,540.48, 142,851.51 and 84,387.35 is: 116,426.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,540.48 : 142,851.51 = 84,387.35 : x
  2. Step 2: Convert to fraction form
    103,540.48/142,851.51 = 84,387.35/x
  3. Step 3: Cross multiply
    103,540.48x = 142,851.51 × 84,387.35
  4. Step 4: Simplify right side
    103,540.48x = 12,054,860,729.53
  5. Step 5: Solve for x
    x = 12,054,860,729.53/103,540.48
  6. Step 6: Final answer
    x = 116,426.55

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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.