Home / 131,421.95-181,362.45-70,992.59

Finding the Fourth Proportional to 131,421.95, 181,362.45 and 70,992.59

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Solution

The fourth proportional to 131,421.95, 181,362.45 and 70,992.59 is: 97,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.95 : 181,362.45 = 70,992.59 : x
  2. Step 2: Convert to fraction form
    131,421.95/181,362.45 = 70,992.59/x
  3. Step 3: Cross multiply
    131,421.95x = 181,362.45 × 70,992.59
  4. Step 4: Simplify right side
    131,421.95x = 12,875,391,000.58
  5. Step 5: Solve for x
    x = 12,875,391,000.58/131,421.95
  6. Step 6: Final answer
    x = 97,969.87

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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.