Home / 118,412.06-163,400.80-67,430

Finding the Fourth Proportional to 118,412.06, 163,400.80 and 67,430

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Solution

The fourth proportional to 118,412.06, 163,400.80 and 67,430 is: 93,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,412.06 : 163,400.80 = 67,430 : x
  2. Step 2: Convert to fraction form
    118,412.06/163,400.80 = 67,430/x
  3. Step 3: Cross multiply
    118,412.06x = 163,400.80 × 67,430
  4. Step 4: Simplify right side
    118,412.06x = 11,018,115,944
  5. Step 5: Solve for x
    x = 11,018,115,944/118,412.06
  6. Step 6: Final answer
    x = 93,048.93

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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.