Home / 153,931.90-212,423.80-85,949.93

Finding the Fourth Proportional to 153,931.90, 212,423.80 and 85,949.93

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Solution

The fourth proportional to 153,931.90, 212,423.80 and 85,949.93 is: 118,609.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,931.90 : 212,423.80 = 85,949.93 : x
  2. Step 2: Convert to fraction form
    153,931.90/212,423.80 = 85,949.93/x
  3. Step 3: Cross multiply
    153,931.90x = 212,423.80 × 85,949.93
  4. Step 4: Simplify right side
    153,931.90x = 18,257,810,740.33
  5. Step 5: Solve for x
    x = 18,257,810,740.33/153,931.90
  6. Step 6: Final answer
    x = 118,609.66

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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.