Home / 145,417.28-200,681.64-81,754.88

Finding the Fourth Proportional to 145,417.28, 200,681.64 and 81,754.88

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Solution

The fourth proportional to 145,417.28, 200,681.64 and 81,754.88 is: 112,824.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,417.28 : 200,681.64 = 81,754.88 : x
  2. Step 2: Convert to fraction form
    145,417.28/200,681.64 = 81,754.88/x
  3. Step 3: Cross multiply
    145,417.28x = 200,681.64 × 81,754.88
  4. Step 4: Simplify right side
    145,417.28x = 16,406,703,396.40
  5. Step 5: Solve for x
    x = 16,406,703,396.40/145,417.28
  6. Step 6: Final answer
    x = 112,824.99

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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.