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Finding the Fourth Proportional to 104,408.16, 144,152.64 and 61,980.32

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Solution

The fourth proportional to 104,408.16, 144,152.64 and 61,980.32 is: 85,574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,408.16 : 144,152.64 = 61,980.32 : x
  2. Step 2: Convert to fraction form
    104,408.16/144,152.64 = 61,980.32/x
  3. Step 3: Cross multiply
    104,408.16x = 144,152.64 × 61,980.32
  4. Step 4: Simplify right side
    104,408.16x = 8,934,626,756.04
  5. Step 5: Solve for x
    x = 8,934,626,756.04/104,408.16
  6. Step 6: Final answer
    x = 85,574.03

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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.