Home / 109,428.48-164,172.48-47,085.12

Finding the Fourth Proportional to 109,428.48, 164,172.48 and 47,085.12

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Solution

The fourth proportional to 109,428.48, 164,172.48 and 47,085.12 is: 70,640.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,428.48 : 164,172.48 = 47,085.12 : x
  2. Step 2: Convert to fraction form
    109,428.48/164,172.48 = 47,085.12/x
  3. Step 3: Cross multiply
    109,428.48x = 164,172.48 × 47,085.12
  4. Step 4: Simplify right side
    109,428.48x = 7,730,080,921.50
  5. Step 5: Solve for x
    x = 7,730,080,921.50/109,428.48
  6. Step 6: Final answer
    x = 70,640.49

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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.