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Finding the Fourth Proportional to 155,277.47, 214,290.51 and 87,315.84

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Solution

The fourth proportional to 155,277.47, 214,290.51 and 87,315.84 is: 120,500.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,277.47 : 214,290.51 = 87,315.84 : x
  2. Step 2: Convert to fraction form
    155,277.47/214,290.51 = 87,315.84/x
  3. Step 3: Cross multiply
    155,277.47x = 214,290.51 × 87,315.84
  4. Step 4: Simplify right side
    155,277.47x = 18,710,956,048.40
  5. Step 5: Solve for x
    x = 18,710,956,048.40/155,277.47
  6. Step 6: Final answer
    x = 120,500.13

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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.