Home / 162,420.72-243,570.32-55,774.40

Finding the Fourth Proportional to 162,420.72, 243,570.32 and 55,774.40

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Solution

The fourth proportional to 162,420.72, 243,570.32 and 55,774.40 is: 83,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,420.72 : 243,570.32 = 55,774.40 : x
  2. Step 2: Convert to fraction form
    162,420.72/243,570.32 = 55,774.40/x
  3. Step 3: Cross multiply
    162,420.72x = 243,570.32 × 55,774.40
  4. Step 4: Simplify right side
    162,420.72x = 13,584,988,455.81
  5. Step 5: Solve for x
    x = 13,584,988,455.81/162,420.72
  6. Step 6: Final answer
    x = 83,640.74

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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.