Home / 156,055.38-215,295.16-90,633.08

Finding the Fourth Proportional to 156,055.38, 215,295.16 and 90,633.08

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Solution

The fourth proportional to 156,055.38, 215,295.16 and 90,633.08 is: 125,038.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,055.38 : 215,295.16 = 90,633.08 : x
  2. Step 2: Convert to fraction form
    156,055.38/215,295.16 = 90,633.08/x
  3. Step 3: Cross multiply
    156,055.38x = 215,295.16 × 90,633.08
  4. Step 4: Simplify right side
    156,055.38x = 19,512,863,459.89
  5. Step 5: Solve for x
    x = 19,512,863,459.89/156,055.38
  6. Step 6: Final answer
    x = 125,038.07

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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.