Home / 159,434.85-220,009.98-87,814.89

Finding the Fourth Proportional to 159,434.85, 220,009.98 and 87,814.89

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Solution

The fourth proportional to 159,434.85, 220,009.98 and 87,814.89 is: 121,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,434.85 : 220,009.98 = 87,814.89 : x
  2. Step 2: Convert to fraction form
    159,434.85/220,009.98 = 87,814.89/x
  3. Step 3: Cross multiply
    159,434.85x = 220,009.98 × 87,814.89
  4. Step 4: Simplify right side
    159,434.85x = 19,320,152,192.60
  5. Step 5: Solve for x
    x = 19,320,152,192.60/159,434.85
  6. Step 6: Final answer
    x = 121,178.98

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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.