Home / 130,740.66-180,362.16-76,999.98

Finding the Fourth Proportional to 130,740.66, 180,362.16 and 76,999.98

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Solution

The fourth proportional to 130,740.66, 180,362.16 and 76,999.98 is: 106,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,740.66 : 180,362.16 = 76,999.98 : x
  2. Step 2: Convert to fraction form
    130,740.66/180,362.16 = 76,999.98/x
  3. Step 3: Cross multiply
    130,740.66x = 180,362.16 × 76,999.98
  4. Step 4: Simplify right side
    130,740.66x = 13,887,882,712.76
  5. Step 5: Solve for x
    x = 13,887,882,712.76/130,740.66
  6. Step 6: Final answer
    x = 106,224.66

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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.