Home / 145,421.20-200,595.72-91,611.28

Finding the Fourth Proportional to 145,421.20, 200,595.72 and 91,611.28

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Solution

The fourth proportional to 145,421.20, 200,595.72 and 91,611.28 is: 126,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,421.20 : 200,595.72 = 91,611.28 : x
  2. Step 2: Convert to fraction form
    145,421.20/200,595.72 = 91,611.28/x
  3. Step 3: Cross multiply
    145,421.20x = 200,595.72 × 91,611.28
  4. Step 4: Simplify right side
    145,421.20x = 18,376,830,671.72
  5. Step 5: Solve for x
    x = 18,376,830,671.72/145,421.20
  6. Step 6: Final answer
    x = 126,369.68

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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.