Home / 160,425.81-221,390.33-87,835.05

Finding the Fourth Proportional to 160,425.81, 221,390.33 and 87,835.05

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Solution

The fourth proportional to 160,425.81, 221,390.33 and 87,835.05 is: 121,213.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,425.81 : 221,390.33 = 87,835.05 : x
  2. Step 2: Convert to fraction form
    160,425.81/221,390.33 = 87,835.05/x
  3. Step 3: Cross multiply
    160,425.81x = 221,390.33 × 87,835.05
  4. Step 4: Simplify right side
    160,425.81x = 19,445,830,265.89
  5. Step 5: Solve for x
    x = 19,445,830,265.89/160,425.81
  6. Step 6: Final answer
    x = 121,213.85

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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.