Home / 118,438.90-163,369.30-70,655.38

Finding the Fourth Proportional to 118,438.90, 163,369.30 and 70,655.38

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Solution

The fourth proportional to 118,438.90, 163,369.30 and 70,655.38 is: 97,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,438.90 : 163,369.30 = 70,655.38 : x
  2. Step 2: Convert to fraction form
    118,438.90/163,369.30 = 70,655.38/x
  3. Step 3: Cross multiply
    118,438.90x = 163,369.30 × 70,655.38
  4. Step 4: Simplify right side
    118,438.90x = 11,542,919,971.83
  5. Step 5: Solve for x
    x = 11,542,919,971.83/118,438.90
  6. Step 6: Final answer
    x = 97,458.86

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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.