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Finding the Fourth Proportional to 99,119.16, 136,897.98 and 65,278.92

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Solution

The fourth proportional to 99,119.16, 136,897.98 and 65,278.92 is: 90,159.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,119.16 : 136,897.98 = 65,278.92 : x
  2. Step 2: Convert to fraction form
    99,119.16/136,897.98 = 65,278.92/x
  3. Step 3: Cross multiply
    99,119.16x = 136,897.98 × 65,278.92
  4. Step 4: Simplify right side
    99,119.16x = 8,936,552,284.58
  5. Step 5: Solve for x
    x = 8,936,552,284.58/99,119.16
  6. Step 6: Final answer
    x = 90,159.69

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1.5x scale

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.