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Finding the Fourth Proportional to 98,830.80, 136,527.12 and 79,682.40

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Solution

The fourth proportional to 98,830.80, 136,527.12 and 79,682.40 is: 110,075.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,830.80 : 136,527.12 = 79,682.40 : x
  2. Step 2: Convert to fraction form
    98,830.80/136,527.12 = 79,682.40/x
  3. Step 3: Cross multiply
    98,830.80x = 136,527.12 × 79,682.40
  4. Step 4: Simplify right side
    98,830.80x = 10,878,808,586.69
  5. Step 5: Solve for x
    x = 10,878,808,586.69/98,830.80
  6. Step 6: Final answer
    x = 110,075.08

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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.