Home / 99,417.12-137,199.40-56,983.84

Finding the Fourth Proportional to 99,417.12, 137,199.40 and 56,983.84

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Solution

The fourth proportional to 99,417.12, 137,199.40 and 56,983.84 is: 78,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,417.12 : 137,199.40 = 56,983.84 : x
  2. Step 2: Convert to fraction form
    99,417.12/137,199.40 = 56,983.84/x
  3. Step 3: Cross multiply
    99,417.12x = 137,199.40 × 56,983.84
  4. Step 4: Simplify right side
    99,417.12x = 7,818,148,657.70
  5. Step 5: Solve for x
    x = 7,818,148,657.70/99,417.12
  6. Step 6: Final answer
    x = 78,639.86

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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.