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Finding the Fourth Proportional to 191,021.04, 286,463.52 and 72,724.32

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Solution

The fourth proportional to 191,021.04, 286,463.52 and 72,724.32 is: 109,060.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,021.04 : 286,463.52 = 72,724.32 : x
  2. Step 2: Convert to fraction form
    191,021.04/286,463.52 = 72,724.32/x
  3. Step 3: Cross multiply
    191,021.04x = 286,463.52 × 72,724.32
  4. Step 4: Simplify right side
    191,021.04x = 20,832,864,696.81
  5. Step 5: Solve for x
    x = 20,832,864,696.81/191,021.04
  6. Step 6: Final answer
    x = 109,060.58

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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.