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Finding the Fourth Proportional to 97,879.84, 135,130.14 and 64,443.04

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Solution

The fourth proportional to 97,879.84, 135,130.14 and 64,443.04 is: 88,968.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,879.84 : 135,130.14 = 64,443.04 : x
  2. Step 2: Convert to fraction form
    97,879.84/135,130.14 = 64,443.04/x
  3. Step 3: Cross multiply
    97,879.84x = 135,130.14 × 64,443.04
  4. Step 4: Simplify right side
    97,879.84x = 8,708,197,017.23
  5. Step 5: Solve for x
    x = 8,708,197,017.23/97,879.84
  6. Step 6: Final answer
    x = 88,968.24

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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.