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Finding the Fourth Proportional to 103,785.50, 155,678.26 and 29,913.50

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Solution

The fourth proportional to 103,785.50, 155,678.26 and 29,913.50 is: 44,870.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,785.50 : 155,678.26 = 29,913.50 : x
  2. Step 2: Convert to fraction form
    103,785.50/155,678.26 = 29,913.50/x
  3. Step 3: Cross multiply
    103,785.50x = 155,678.26 × 29,913.50
  4. Step 4: Simplify right side
    103,785.50x = 4,656,881,630.51
  5. Step 5: Solve for x
    x = 4,656,881,630.51/103,785.50
  6. Step 6: Final answer
    x = 44,870.25

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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.