Home / 143,611.80-215,417.35-38,430.77

Finding the Fourth Proportional to 143,611.80, 215,417.35 and 38,430.77

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Solution

The fourth proportional to 143,611.80, 215,417.35 and 38,430.77 is: 57,646.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,611.80 : 215,417.35 = 38,430.77 : x
  2. Step 2: Convert to fraction form
    143,611.80/215,417.35 = 38,430.77/x
  3. Step 3: Cross multiply
    143,611.80x = 215,417.35 × 38,430.77
  4. Step 4: Simplify right side
    143,611.80x = 8,278,654,631.86
  5. Step 5: Solve for x
    x = 8,278,654,631.86/143,611.80
  6. Step 6: Final answer
    x = 57,646.06

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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.