Home / 99,742.20-137,695.08-77,030.28

Finding the Fourth Proportional to 99,742.20, 137,695.08 and 77,030.28

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Solution

The fourth proportional to 99,742.20, 137,695.08 and 77,030.28 is: 106,341.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,742.20 : 137,695.08 = 77,030.28 : x
  2. Step 2: Convert to fraction form
    99,742.20/137,695.08 = 77,030.28/x
  3. Step 3: Cross multiply
    99,742.20x = 137,695.08 × 77,030.28
  4. Step 4: Simplify right side
    99,742.20x = 10,606,690,567.02
  5. Step 5: Solve for x
    x = 10,606,690,567.02/99,742.20
  6. Step 6: Final answer
    x = 106,341.05

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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.