Home / 130,071.13-179,521.01-75,640.17

Finding the Fourth Proportional to 130,071.13, 179,521.01 and 75,640.17

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Solution

The fourth proportional to 130,071.13, 179,521.01 and 75,640.17 is: 104,396.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,071.13 : 179,521.01 = 75,640.17 : x
  2. Step 2: Convert to fraction form
    130,071.13/179,521.01 = 75,640.17/x
  3. Step 3: Cross multiply
    130,071.13x = 179,521.01 × 75,640.17
  4. Step 4: Simplify right side
    130,071.13x = 13,578,999,714.97
  5. Step 5: Solve for x
    x = 13,578,999,714.97/130,071.13
  6. Step 6: Final answer
    x = 104,396.72

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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.