Home / 130,015.64-179,368.16-79,020.15

Finding the Fourth Proportional to 130,015.64, 179,368.16 and 79,020.15

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Solution

The fourth proportional to 130,015.64, 179,368.16 and 79,020.15 is: 109,015.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,015.64 : 179,368.16 = 79,020.15 : x
  2. Step 2: Convert to fraction form
    130,015.64/179,368.16 = 79,020.15/x
  3. Step 3: Cross multiply
    130,015.64x = 179,368.16 × 79,020.15
  4. Step 4: Simplify right side
    130,015.64x = 14,173,698,513.32
  5. Step 5: Solve for x
    x = 14,173,698,513.32/130,015.64
  6. Step 6: Final answer
    x = 109,015.34

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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.