Home / 130,030.30-179,439.06-72,670.15

Finding the Fourth Proportional to 130,030.30, 179,439.06 and 72,670.15

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Solution

The fourth proportional to 130,030.30, 179,439.06 and 72,670.15 is: 100,283.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,030.30 : 179,439.06 = 72,670.15 : x
  2. Step 2: Convert to fraction form
    130,030.30/179,439.06 = 72,670.15/x
  3. Step 3: Cross multiply
    130,030.30x = 179,439.06 × 72,670.15
  4. Step 4: Simplify right side
    130,030.30x = 13,039,863,406.06
  5. Step 5: Solve for x
    x = 13,039,863,406.06/130,030.30
  6. Step 6: Final answer
    x = 100,283.27

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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.