Home / 143,641.13-215,461.69-45,145.13

Finding the Fourth Proportional to 143,641.13, 215,461.69 and 45,145.13

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Solution

The fourth proportional to 143,641.13, 215,461.69 and 45,145.13 is: 67,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,641.13 : 215,461.69 = 45,145.13 : x
  2. Step 2: Convert to fraction form
    143,641.13/215,461.69 = 45,145.13/x
  3. Step 3: Cross multiply
    143,641.13x = 215,461.69 × 45,145.13
  4. Step 4: Simplify right side
    143,641.13x = 9,727,044,814.90
  5. Step 5: Solve for x
    x = 9,727,044,814.90/143,641.13
  6. Step 6: Final answer
    x = 67,717.69

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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.