Home / 109,312.13-163,968.19-30,428.41

Finding the Fourth Proportional to 109,312.13, 163,968.19 and 30,428.41

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Solution

The fourth proportional to 109,312.13, 163,968.19 and 30,428.41 is: 45,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,312.13 : 163,968.19 = 30,428.41 : x
  2. Step 2: Convert to fraction form
    109,312.13/163,968.19 = 30,428.41/x
  3. Step 3: Cross multiply
    109,312.13x = 163,968.19 × 30,428.41
  4. Step 4: Simplify right side
    109,312.13x = 4,989,291,312.28
  5. Step 5: Solve for x
    x = 4,989,291,312.28/109,312.13
  6. Step 6: Final answer
    x = 45,642.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.