Home / 99,402.16-137,178.12-56,974

Finding the Fourth Proportional to 99,402.16, 137,178.12 and 56,974

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Solution

The fourth proportional to 99,402.16, 137,178.12 and 56,974 is: 78,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,402.16 : 137,178.12 = 56,974 : x
  2. Step 2: Convert to fraction form
    99,402.16/137,178.12 = 56,974/x
  3. Step 3: Cross multiply
    99,402.16x = 137,178.12 × 56,974
  4. Step 4: Simplify right side
    99,402.16x = 7,815,586,208.88
  5. Step 5: Solve for x
    x = 7,815,586,208.88/99,402.16
  6. Step 6: Final answer
    x = 78,625.92

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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.