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Finding the Fourth Proportional to 103,386.20, 155,225.10 and 64,020.20

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Solution

The fourth proportional to 103,386.20, 155,225.10 and 64,020.20 is: 96,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,386.20 : 155,225.10 = 64,020.20 : x
  2. Step 2: Convert to fraction form
    103,386.20/155,225.10 = 64,020.20/x
  3. Step 3: Cross multiply
    103,386.20x = 155,225.10 × 64,020.20
  4. Step 4: Simplify right side
    103,386.20x = 9,937,541,947.02
  5. Step 5: Solve for x
    x = 9,937,541,947.02/103,386.20
  6. Step 6: Final answer
    x = 96,120.58

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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.