Home / 130,003.16-179,402.16-72,643.40

Finding the Fourth Proportional to 130,003.16, 179,402.16 and 72,643.40

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Solution

The fourth proportional to 130,003.16, 179,402.16 and 72,643.40 is: 100,246.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,003.16 : 179,402.16 = 72,643.40 : x
  2. Step 2: Convert to fraction form
    130,003.16/179,402.16 = 72,643.40/x
  3. Step 3: Cross multiply
    130,003.16x = 179,402.16 × 72,643.40
  4. Step 4: Simplify right side
    130,003.16x = 13,032,382,869.74
  5. Step 5: Solve for x
    x = 13,032,382,869.74/130,003.16
  6. Step 6: Final answer
    x = 100,246.66

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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.