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Finding the Fourth Proportional to 145,363.60, 218,016.60 and 70,483.60

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Solution

The fourth proportional to 145,363.60, 218,016.60 and 70,483.60 is: 105,711.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,363.60 : 218,016.60 = 70,483.60 : x
  2. Step 2: Convert to fraction form
    145,363.60/218,016.60 = 70,483.60/x
  3. Step 3: Cross multiply
    145,363.60x = 218,016.60 × 70,483.60
  4. Step 4: Simplify right side
    145,363.60x = 15,366,594,827.76
  5. Step 5: Solve for x
    x = 15,366,594,827.76/145,363.60
  6. Step 6: Final answer
    x = 105,711.44

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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.