Home / 142,512,020.40-213,768,030.60-61,890,452.40

Finding the Fourth Proportional to 142,512,020.40, 213,768,030.60 and 61,890,452.40

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Solution

The fourth proportional to 142,512,020.40, 213,768,030.60 and 61,890,452.40 is: 92,835,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,512,020.40 : 213,768,030.60 = 61,890,452.40 : x
  2. Step 2: Convert to fraction form
    142,512,020.40/213,768,030.60 = 61,890,452.40/x
  3. Step 3: Cross multiply
    142,512,020.40x = 213,768,030.60 × 61,890,452.40
  4. Step 4: Simplify right side
    142,512,020.40x = 13,230,200,122,491,042
  5. Step 5: Solve for x
    x = 13,230,200,122,491,042/142,512,020.40
  6. Step 6: Final answer
    x = 92,835,678.60

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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.