Home / 141,386.40-212,079.60-71,402.40

Finding the Fourth Proportional to 141,386.40, 212,079.60 and 71,402.40

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Solution

The fourth proportional to 141,386.40, 212,079.60 and 71,402.40 is: 107,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,386.40 : 212,079.60 = 71,402.40 : x
  2. Step 2: Convert to fraction form
    141,386.40/212,079.60 = 71,402.40/x
  3. Step 3: Cross multiply
    141,386.40x = 212,079.60 × 71,402.40
  4. Step 4: Simplify right side
    141,386.40x = 15,142,992,431.04
  5. Step 5: Solve for x
    x = 15,142,992,431.04/141,386.40
  6. Step 6: Final answer
    x = 107,103.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.