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Finding the Fourth Proportional to 105,428.80, 158,164.80 and 35,358.40

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Solution

The fourth proportional to 105,428.80, 158,164.80 and 35,358.40 is: 53,044.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,428.80 : 158,164.80 = 35,358.40 : x
  2. Step 2: Convert to fraction form
    105,428.80/158,164.80 = 35,358.40/x
  3. Step 3: Cross multiply
    105,428.80x = 158,164.80 × 35,358.40
  4. Step 4: Simplify right side
    105,428.80x = 5,592,454,264.32
  5. Step 5: Solve for x
    x = 5,592,454,264.32/105,428.80
  6. Step 6: Final answer
    x = 53,044.84

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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.