Home / 99,509.95-137,178.66-75,595.11

Finding the Fourth Proportional to 99,509.95, 137,178.66 and 75,595.11

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Solution

The fourth proportional to 99,509.95, 137,178.66 and 75,595.11 is: 104,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,509.95 : 137,178.66 = 75,595.11 : x
  2. Step 2: Convert to fraction form
    99,509.95/137,178.66 = 75,595.11/x
  3. Step 3: Cross multiply
    99,509.95x = 137,178.66 × 75,595.11
  4. Step 4: Simplify right side
    99,509.95x = 10,370,035,892.35
  5. Step 5: Solve for x
    x = 10,370,035,892.35/99,509.95
  6. Step 6: Final answer
    x = 104,211.05

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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.