Home / 130,015.08-179,418.72-72,655.20

Finding the Fourth Proportional to 130,015.08, 179,418.72 and 72,655.20

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Solution

The fourth proportional to 130,015.08, 179,418.72 and 72,655.20 is: 100,263.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,015.08 : 179,418.72 = 72,655.20 : x
  2. Step 2: Convert to fraction form
    130,015.08/179,418.72 = 72,655.20/x
  3. Step 3: Cross multiply
    130,015.08x = 179,418.72 × 72,655.20
  4. Step 4: Simplify right side
    130,015.08x = 13,035,702,985.34
  5. Step 5: Solve for x
    x = 13,035,702,985.34/130,015.08
  6. Step 6: Final answer
    x = 100,263.01

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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.