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Finding the Fourth Proportional to 103,062.58, 155,295.88 and 84,752.74

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Solution

The fourth proportional to 103,062.58, 155,295.88 and 84,752.74 is: 127,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,062.58 : 155,295.88 = 84,752.74 : x
  2. Step 2: Convert to fraction form
    103,062.58/155,295.88 = 84,752.74/x
  3. Step 3: Cross multiply
    103,062.58x = 155,295.88 × 84,752.74
  4. Step 4: Simplify right side
    103,062.58x = 13,161,751,340.71
  5. Step 5: Solve for x
    x = 13,161,751,340.71/103,062.58
  6. Step 6: Final answer
    x = 127,706.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.