Home / 115,916.16-159,966.33-64,928.45

Finding the Fourth Proportional to 115,916.16, 159,966.33 and 64,928.45

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Solution

The fourth proportional to 115,916.16, 159,966.33 and 64,928.45 is: 89,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,916.16 : 159,966.33 = 64,928.45 : x
  2. Step 2: Convert to fraction form
    115,916.16/159,966.33 = 64,928.45/x
  3. Step 3: Cross multiply
    115,916.16x = 159,966.33 × 64,928.45
  4. Step 4: Simplify right side
    115,916.16x = 10,386,366,015.52
  5. Step 5: Solve for x
    x = 10,386,366,015.52/115,916.16
  6. Step 6: Final answer
    x = 89,602.40

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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.