Home / 131,292.86-181,186.47-77,577.75

Finding the Fourth Proportional to 131,292.86, 181,186.47 and 77,577.75

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Solution

The fourth proportional to 131,292.86, 181,186.47 and 77,577.75 is: 107,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,292.86 : 181,186.47 = 77,577.75 : x
  2. Step 2: Convert to fraction form
    131,292.86/181,186.47 = 77,577.75/x
  3. Step 3: Cross multiply
    131,292.86x = 181,186.47 × 77,577.75
  4. Step 4: Simplify right side
    131,292.86x = 14,056,038,673.04
  5. Step 5: Solve for x
    x = 14,056,038,673.04/131,292.86
  6. Step 6: Final answer
    x = 107,058.67

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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.