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Finding the Fourth Proportional to 124,095.69, 186,143.55 and 86,728.74

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Solution

The fourth proportional to 124,095.69, 186,143.55 and 86,728.74 is: 130,093.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,095.69 : 186,143.55 = 86,728.74 : x
  2. Step 2: Convert to fraction form
    124,095.69/186,143.55 = 86,728.74/x
  3. Step 3: Cross multiply
    124,095.69x = 186,143.55 × 86,728.74
  4. Step 4: Simplify right side
    124,095.69x = 16,143,995,550.63
  5. Step 5: Solve for x
    x = 16,143,995,550.63/124,095.69
  6. Step 6: Final answer
    x = 130,093.12

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1.5x scale

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.