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Finding the Fourth Proportional to 98,994.70, 136,599.66 and 55,980.10

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Solution

The fourth proportional to 98,994.70, 136,599.66 and 55,980.10 is: 77,245.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,994.70 : 136,599.66 = 55,980.10 : x
  2. Step 2: Convert to fraction form
    98,994.70/136,599.66 = 55,980.10/x
  3. Step 3: Cross multiply
    98,994.70x = 136,599.66 × 55,980.10
  4. Step 4: Simplify right side
    98,994.70x = 7,646,862,626.77
  5. Step 5: Solve for x
    x = 7,646,862,626.77/98,994.70
  6. Step 6: Final answer
    x = 77,245.17

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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.