Home / 118,406.91-163,412.64-64,699.89

Finding the Fourth Proportional to 118,406.91, 163,412.64 and 64,699.89

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Solution

The fourth proportional to 118,406.91, 163,412.64 and 64,699.89 is: 89,291.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,406.91 : 163,412.64 = 64,699.89 : x
  2. Step 2: Convert to fraction form
    118,406.91/163,412.64 = 64,699.89/x
  3. Step 3: Cross multiply
    118,406.91x = 163,412.64 × 64,699.89
  4. Step 4: Simplify right side
    118,406.91x = 10,572,779,679.41
  5. Step 5: Solve for x
    x = 10,572,779,679.41/118,406.91
  6. Step 6: Final answer
    x = 89,291.91

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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.