Home / 90,723,009.30-136,084,513.95-81,369,647.70

Finding the Fourth Proportional to 90,723,009.30, 136,084,513.95 and 81,369,647.70

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Solution

The fourth proportional to 90,723,009.30, 136,084,513.95 and 81,369,647.70 is: 122,054,471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,723,009.30 : 136,084,513.95 = 81,369,647.70 : x
  2. Step 2: Convert to fraction form
    90,723,009.30/136,084,513.95 = 81,369,647.70/x
  3. Step 3: Cross multiply
    90,723,009.30x = 136,084,513.95 × 81,369,647.70
  4. Step 4: Simplify right side
    90,723,009.30x = 11,073,148,957,537,234
  5. Step 5: Solve for x
    x = 11,073,148,957,537,234/90,723,009.30
  6. Step 6: Final answer
    x = 122,054,471.55

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Double scale
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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.