Home / 212,668,156.52-318,820,281.48-81,604,486.52

Finding the Fourth Proportional to 212,668,156.52, 318,820,281.48 and 81,604,486.52

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Solution

The fourth proportional to 212,668,156.52, 318,820,281.48 and 81,604,486.52 is: 122,336,911.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,668,156.52 : 318,820,281.48 = 81,604,486.52 : x
  2. Step 2: Convert to fraction form
    212,668,156.52/318,820,281.48 = 81,604,486.52/x
  3. Step 3: Cross multiply
    212,668,156.52x = 318,820,281.48 × 81,604,486.52
  4. Step 4: Simplify right side
    212,668,156.52x = 26,017,165,362,337,264
  5. Step 5: Solve for x
    x = 26,017,165,362,337,264/212,668,156.52
  6. Step 6: Final answer
    x = 122,336,911.12

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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.