Home / 153,155.42-211,354.60-85,170.91

Finding the Fourth Proportional to 153,155.42, 211,354.60 and 85,170.91

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Solution

The fourth proportional to 153,155.42, 211,354.60 and 85,170.91 is: 117,535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,155.42 : 211,354.60 = 85,170.91 : x
  2. Step 2: Convert to fraction form
    153,155.42/211,354.60 = 85,170.91/x
  3. Step 3: Cross multiply
    153,155.42x = 211,354.60 × 85,170.91
  4. Step 4: Simplify right side
    153,155.42x = 18,001,262,897.02
  5. Step 5: Solve for x
    x = 18,001,262,897.02/153,155.42
  6. Step 6: Final answer
    x = 117,535.92

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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.