Home / 260,130.72-390,190.55-119,889.35

Finding the Fourth Proportional to 260,130.72, 390,190.55 and 119,889.35

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Solution

The fourth proportional to 260,130.72, 390,190.55 and 119,889.35 is: 179,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,130.72 : 390,190.55 = 119,889.35 : x
  2. Step 2: Convert to fraction form
    260,130.72/390,190.55 = 119,889.35/x
  3. Step 3: Cross multiply
    260,130.72x = 390,190.55 × 119,889.35
  4. Step 4: Simplify right side
    260,130.72x = 46,779,688,865.24
  5. Step 5: Solve for x
    x = 46,779,688,865.24/260,130.72
  6. Step 6: Final answer
    x = 179,831.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.