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Finding the Fourth Proportional to 98,902.84, 136,471.02 and 56,455.60

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Solution

The fourth proportional to 98,902.84, 136,471.02 and 56,455.60 is: 77,900.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,902.84 : 136,471.02 = 56,455.60 : x
  2. Step 2: Convert to fraction form
    98,902.84/136,471.02 = 56,455.60/x
  3. Step 3: Cross multiply
    98,902.84x = 136,471.02 × 56,455.60
  4. Step 4: Simplify right side
    98,902.84x = 7,704,553,316.71
  5. Step 5: Solve for x
    x = 7,704,553,316.71/98,902.84
  6. Step 6: Final answer
    x = 77,900.22

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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.