Home / 130,506.15-180,111.12-73,155.21

Finding the Fourth Proportional to 130,506.15, 180,111.12 and 73,155.21

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Solution

The fourth proportional to 130,506.15, 180,111.12 and 73,155.21 is: 100,961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,506.15 : 180,111.12 = 73,155.21 : x
  2. Step 2: Convert to fraction form
    130,506.15/180,111.12 = 73,155.21/x
  3. Step 3: Cross multiply
    130,506.15x = 180,111.12 × 73,155.21
  4. Step 4: Simplify right side
    130,506.15x = 13,176,066,806.94
  5. Step 5: Solve for x
    x = 13,176,066,806.94/130,506.15
  6. Step 6: Final answer
    x = 100,961.27

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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.