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Finding the Fourth Proportional to 161,903.61, 223,427.95 and 90,288.17

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Solution

The fourth proportional to 161,903.61, 223,427.95 and 90,288.17 is: 124,598.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,903.61 : 223,427.95 = 90,288.17 : x
  2. Step 2: Convert to fraction form
    161,903.61/223,427.95 = 90,288.17/x
  3. Step 3: Cross multiply
    161,903.61x = 223,427.95 × 90,288.17
  4. Step 4: Simplify right side
    161,903.61x = 20,172,899,615.21
  5. Step 5: Solve for x
    x = 20,172,899,615.21/161,903.61
  6. Step 6: Final answer
    x = 124,598.21

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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.