Home / 130,483.91-180,154.53-100,215.14

Finding the Fourth Proportional to 130,483.91, 180,154.53 and 100,215.14

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Solution

The fourth proportional to 130,483.91, 180,154.53 and 100,215.14 is: 138,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,483.91 : 180,154.53 = 100,215.14 : x
  2. Step 2: Convert to fraction form
    130,483.91/180,154.53 = 100,215.14/x
  3. Step 3: Cross multiply
    130,483.91x = 180,154.53 × 100,215.14
  4. Step 4: Simplify right side
    130,483.91x = 18,054,211,558.18
  5. Step 5: Solve for x
    x = 18,054,211,558.18/130,483.91
  6. Step 6: Final answer
    x = 138,363.51

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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.