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Finding the Fourth Proportional to 161,730.40, 242,595.60 and 120,258.40

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Solution

The fourth proportional to 161,730.40, 242,595.60 and 120,258.40 is: 180,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,730.40 : 242,595.60 = 120,258.40 : x
  2. Step 2: Convert to fraction form
    161,730.40/242,595.60 = 120,258.40/x
  3. Step 3: Cross multiply
    161,730.40x = 242,595.60 × 120,258.40
  4. Step 4: Simplify right side
    161,730.40x = 29,174,158,703.04
  5. Step 5: Solve for x
    x = 29,174,158,703.04/161,730.40
  6. Step 6: Final answer
    x = 180,387.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.