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Finding the Fourth Proportional to 145,572.58, 218,403.44 and 74,545.51

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Solution

The fourth proportional to 145,572.58, 218,403.44 and 74,545.51 is: 111,841.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,572.58 : 218,403.44 = 74,545.51 : x
  2. Step 2: Convert to fraction form
    145,572.58/218,403.44 = 74,545.51/x
  3. Step 3: Cross multiply
    145,572.58x = 218,403.44 × 74,545.51
  4. Step 4: Simplify right side
    145,572.58x = 16,280,994,355.81
  5. Step 5: Solve for x
    x = 16,280,994,355.81/145,572.58
  6. Step 6: Final answer
    x = 111,841.08

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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.