Home / 131,385.07-181,311.40-70,955.73

Finding the Fourth Proportional to 131,385.07, 181,311.40 and 70,955.73

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Solution

The fourth proportional to 131,385.07, 181,311.40 and 70,955.73 is: 97,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,385.07 : 181,311.40 = 70,955.73 : x
  2. Step 2: Convert to fraction form
    131,385.07/181,311.40 = 70,955.73/x
  3. Step 3: Cross multiply
    131,385.07x = 181,311.40 × 70,955.73
  4. Step 4: Simplify right side
    131,385.07x = 12,865,081,482.99
  5. Step 5: Solve for x
    x = 12,865,081,482.99/131,385.07
  6. Step 6: Final answer
    x = 97,918.90

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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.