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Finding the Fourth Proportional to 115,368.65, 159,208.47 and 64,378.25

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Solution

The fourth proportional to 115,368.65, 159,208.47 and 64,378.25 is: 88,841.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,368.65 : 159,208.47 = 64,378.25 : x
  2. Step 2: Convert to fraction form
    115,368.65/159,208.47 = 64,378.25/x
  3. Step 3: Cross multiply
    115,368.65x = 159,208.47 × 64,378.25
  4. Step 4: Simplify right side
    115,368.65x = 10,249,562,683.78
  5. Step 5: Solve for x
    x = 10,249,562,683.78/115,368.65
  6. Step 6: Final answer
    x = 88,841.84

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1.5x scale

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.