Home / 130,254.18-179,740.08-72,890.55

Finding the Fourth Proportional to 130,254.18, 179,740.08 and 72,890.55

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Solution

The fourth proportional to 130,254.18, 179,740.08 and 72,890.55 is: 100,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,254.18 : 179,740.08 = 72,890.55 : x
  2. Step 2: Convert to fraction form
    130,254.18/179,740.08 = 72,890.55/x
  3. Step 3: Cross multiply
    130,254.18x = 179,740.08 × 72,890.55
  4. Step 4: Simplify right side
    130,254.18x = 13,101,353,288.24
  5. Step 5: Solve for x
    x = 13,101,353,288.24/130,254.18
  6. Step 6: Final answer
    x = 100,582.98

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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.