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Finding the Fourth Proportional to 145,345.68, 200,579.40 and 79,937.19

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Solution

The fourth proportional to 145,345.68, 200,579.40 and 79,937.19 is: 110,314.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,345.68 : 200,579.40 = 79,937.19 : x
  2. Step 2: Convert to fraction form
    145,345.68/200,579.40 = 79,937.19/x
  3. Step 3: Cross multiply
    145,345.68x = 200,579.40 × 79,937.19
  4. Step 4: Simplify right side
    145,345.68x = 16,033,753,607.89
  5. Step 5: Solve for x
    x = 16,033,753,607.89/145,345.68
  6. Step 6: Final answer
    x = 110,314.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.