Home / 131,427.18-181,430.05-76,971.77

Finding the Fourth Proportional to 131,427.18, 181,430.05 and 76,971.77

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Solution

The fourth proportional to 131,427.18, 181,430.05 and 76,971.77 is: 106,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,427.18 : 181,430.05 = 76,971.77 : x
  2. Step 2: Convert to fraction form
    131,427.18/181,430.05 = 76,971.77/x
  3. Step 3: Cross multiply
    131,427.18x = 181,430.05 × 76,971.77
  4. Step 4: Simplify right side
    131,427.18x = 13,964,992,547.01
  5. Step 5: Solve for x
    x = 13,964,992,547.01/131,427.18
  6. Step 6: Final answer
    x = 106,256.50

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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.