Home / 115,430.18-159,292.89-64,440

Finding the Fourth Proportional to 115,430.18, 159,292.89 and 64,440

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Solution

The fourth proportional to 115,430.18, 159,292.89 and 64,440 is: 88,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,430.18 : 159,292.89 = 64,440 : x
  2. Step 2: Convert to fraction form
    115,430.18/159,292.89 = 64,440/x
  3. Step 3: Cross multiply
    115,430.18x = 159,292.89 × 64,440
  4. Step 4: Simplify right side
    115,430.18x = 10,264,833,831.60
  5. Step 5: Solve for x
    x = 10,264,833,831.60/115,430.18
  6. Step 6: Final answer
    x = 88,926.78

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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.