Home / 105,590.22-145,700.96-84,134.40

Finding the Fourth Proportional to 105,590.22, 145,700.96 and 84,134.40

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Solution

The fourth proportional to 105,590.22, 145,700.96 and 84,134.40 is: 116,094.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,590.22 : 145,700.96 = 84,134.40 : x
  2. Step 2: Convert to fraction form
    105,590.22/145,700.96 = 84,134.40/x
  3. Step 3: Cross multiply
    105,590.22x = 145,700.96 × 84,134.40
  4. Step 4: Simplify right side
    105,590.22x = 12,258,462,849.02
  5. Step 5: Solve for x
    x = 12,258,462,849.02/105,590.22
  6. Step 6: Final answer
    x = 116,094.68

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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.