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Finding the Fourth Proportional to 103,346.40, 155,019.60 and 65,948.70

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Solution

The fourth proportional to 103,346.40, 155,019.60 and 65,948.70 is: 98,923.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,346.40 : 155,019.60 = 65,948.70 : x
  2. Step 2: Convert to fraction form
    103,346.40/155,019.60 = 65,948.70/x
  3. Step 3: Cross multiply
    103,346.40x = 155,019.60 × 65,948.70
  4. Step 4: Simplify right side
    103,346.40x = 10,223,341,094.52
  5. Step 5: Solve for x
    x = 10,223,341,094.52/103,346.40
  6. Step 6: Final answer
    x = 98,923.05

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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.