Home / 143,389.80-215,078.40-43,547.76

Finding the Fourth Proportional to 143,389.80, 215,078.40 and 43,547.76

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Solution

The fourth proportional to 143,389.80, 215,078.40 and 43,547.76 is: 65,319.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,389.80 : 215,078.40 = 43,547.76 : x
  2. Step 2: Convert to fraction form
    143,389.80/215,078.40 = 43,547.76/x
  3. Step 3: Cross multiply
    143,389.80x = 215,078.40 × 43,547.76
  4. Step 4: Simplify right side
    143,389.80x = 9,366,182,544.38
  5. Step 5: Solve for x
    x = 9,366,182,544.38/143,389.80
  6. Step 6: Final answer
    x = 65,319.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.