Home / 115,909.48-159,979.98-70,602.40

Finding the Fourth Proportional to 115,909.48, 159,979.98 and 70,602.40

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Solution

The fourth proportional to 115,909.48, 159,979.98 and 70,602.40 is: 97,446.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,909.48 : 159,979.98 = 70,602.40 : x
  2. Step 2: Convert to fraction form
    115,909.48/159,979.98 = 70,602.40/x
  3. Step 3: Cross multiply
    115,909.48x = 159,979.98 × 70,602.40
  4. Step 4: Simplify right side
    115,909.48x = 11,294,970,539.95
  5. Step 5: Solve for x
    x = 11,294,970,539.95/115,909.48
  6. Step 6: Final answer
    x = 97,446.48

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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.