Home / 155,046,024.72-213,973,070.40-85,431,394.80

Finding the Fourth Proportional to 155,046,024.72, 213,973,070.40 and 85,431,394.80

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Solution

The fourth proportional to 155,046,024.72, 213,973,070.40 and 85,431,394.80 is: 117,900,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,046,024.72 : 213,973,070.40 = 85,431,394.80 : x
  2. Step 2: Convert to fraction form
    155,046,024.72/213,973,070.40 = 85,431,394.80/x
  3. Step 3: Cross multiply
    155,046,024.72x = 213,973,070.40 × 85,431,394.80
  4. Step 4: Simplify right side
    155,046,024.72x = 18,280,017,853,910,592
  5. Step 5: Solve for x
    x = 18,280,017,853,910,592/155,046,024.72
  6. Step 6: Final answer
    x = 117,900,590.40

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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.