Home / 90,909.28-136,318.29-52,970.82

Finding the Fourth Proportional to 90,909.28, 136,318.29 and 52,970.82

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Solution

The fourth proportional to 90,909.28, 136,318.29 and 52,970.82 is: 79,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,909.28 : 136,318.29 = 52,970.82 : x
  2. Step 2: Convert to fraction form
    90,909.28/136,318.29 = 52,970.82/x
  3. Step 3: Cross multiply
    90,909.28x = 136,318.29 × 52,970.82
  4. Step 4: Simplify right side
    90,909.28x = 7,220,891,602.30
  5. Step 5: Solve for x
    x = 7,220,891,602.30/90,909.28
  6. Step 6: Final answer
    x = 79,429.64

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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.