Home / 131,707.45-181,756.75-71,278.08

Finding the Fourth Proportional to 131,707.45, 181,756.75 and 71,278.08

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Solution

The fourth proportional to 131,707.45, 181,756.75 and 71,278.08 is: 98,364.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,707.45 : 181,756.75 = 71,278.08 : x
  2. Step 2: Convert to fraction form
    131,707.45/181,756.75 = 71,278.08/x
  3. Step 3: Cross multiply
    131,707.45x = 181,756.75 × 71,278.08
  4. Step 4: Simplify right side
    131,707.45x = 12,955,272,167.04
  5. Step 5: Solve for x
    x = 12,955,272,167.04/131,707.45
  6. Step 6: Final answer
    x = 98,364.00

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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.