Home / 99,315.18-137,052.09-56,298.65

Finding the Fourth Proportional to 99,315.18, 137,052.09 and 56,298.65

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Solution

The fourth proportional to 99,315.18, 137,052.09 and 56,298.65 is: 77,690.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,315.18 : 137,052.09 = 56,298.65 : x
  2. Step 2: Convert to fraction form
    99,315.18/137,052.09 = 56,298.65/x
  3. Step 3: Cross multiply
    99,315.18x = 137,052.09 × 56,298.65
  4. Step 4: Simplify right side
    99,315.18x = 7,715,847,646.68
  5. Step 5: Solve for x
    x = 7,715,847,646.68/99,315.18
  6. Step 6: Final answer
    x = 77,690.52

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1.5x scale

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.