Home / 145,031.40-200,180.10-99,109.62

Finding the Fourth Proportional to 145,031.40, 200,180.10 and 99,109.62

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Solution

The fourth proportional to 145,031.40, 200,180.10 and 99,109.62 is: 136,796.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,031.40 : 200,180.10 = 99,109.62 : x
  2. Step 2: Convert to fraction form
    145,031.40/200,180.10 = 99,109.62/x
  3. Step 3: Cross multiply
    145,031.40x = 200,180.10 × 99,109.62
  4. Step 4: Simplify right side
    145,031.40x = 19,839,773,642.56
  5. Step 5: Solve for x
    x = 19,839,773,642.56/145,031.40
  6. Step 6: Final answer
    x = 136,796.40

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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.