Home / 103,499.10-155,248.65-86,768.55

Finding the Fourth Proportional to 103,499.10, 155,248.65 and 86,768.55

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Solution

The fourth proportional to 103,499.10, 155,248.65 and 86,768.55 is: 130,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,499.10 : 155,248.65 = 86,768.55 : x
  2. Step 2: Convert to fraction form
    103,499.10/155,248.65 = 86,768.55/x
  3. Step 3: Cross multiply
    103,499.10x = 155,248.65 × 86,768.55
  4. Step 4: Simplify right side
    103,499.10x = 13,470,700,249.96
  5. Step 5: Solve for x
    x = 13,470,700,249.96/103,499.10
  6. Step 6: Final answer
    x = 130,152.83

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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.