Home / 130,351.34-179,888.04-72,990.18

Finding the Fourth Proportional to 130,351.34, 179,888.04 and 72,990.18

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Solution

The fourth proportional to 130,351.34, 179,888.04 and 72,990.18 is: 100,728.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,351.34 : 179,888.04 = 72,990.18 : x
  2. Step 2: Convert to fraction form
    130,351.34/179,888.04 = 72,990.18/x
  3. Step 3: Cross multiply
    130,351.34x = 179,888.04 × 72,990.18
  4. Step 4: Simplify right side
    130,351.34x = 13,130,060,419.45
  5. Step 5: Solve for x
    x = 13,130,060,419.45/130,351.34
  6. Step 6: Final answer
    x = 100,728.23

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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.