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Finding the Fourth Proportional to 99,108.60, 136,776.60 and 56,088.03

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Solution

The fourth proportional to 99,108.60, 136,776.60 and 56,088.03 is: 77,405.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,108.60 : 136,776.60 = 56,088.03 : x
  2. Step 2: Convert to fraction form
    99,108.60/136,776.60 = 56,088.03/x
  3. Step 3: Cross multiply
    99,108.60x = 136,776.60 × 56,088.03
  4. Step 4: Simplify right side
    99,108.60x = 7,671,530,044.10
  5. Step 5: Solve for x
    x = 7,671,530,044.10/99,108.60
  6. Step 6: Final answer
    x = 77,405.29

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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.