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Finding the Fourth Proportional to 98,943.84, 136,560.04 and 75,030.20

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Solution

The fourth proportional to 98,943.84, 136,560.04 and 75,030.20 is: 103,554.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,943.84 : 136,560.04 = 75,030.20 : x
  2. Step 2: Convert to fraction form
    98,943.84/136,560.04 = 75,030.20/x
  3. Step 3: Cross multiply
    98,943.84x = 136,560.04 × 75,030.20
  4. Step 4: Simplify right side
    98,943.84x = 10,246,127,113.21
  5. Step 5: Solve for x
    x = 10,246,127,113.21/98,943.84
  6. Step 6: Final answer
    x = 103,554.98

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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.