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Finding the Fourth Proportional to 98,604.80, 136,043.52 and 56,160.80

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Solution

The fourth proportional to 98,604.80, 136,043.52 and 56,160.80 is: 77,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,604.80 : 136,043.52 = 56,160.80 : x
  2. Step 2: Convert to fraction form
    98,604.80/136,043.52 = 56,160.80/x
  3. Step 3: Cross multiply
    98,604.80x = 136,043.52 × 56,160.80
  4. Step 4: Simplify right side
    98,604.80x = 7,640,312,918.02
  5. Step 5: Solve for x
    x = 7,640,312,918.02/98,604.80
  6. Step 6: Final answer
    x = 77,484.19

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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.