Home / 151,683.11-209,314.51-83,686.76

Finding the Fourth Proportional to 151,683.11, 209,314.51 and 83,686.76

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Solution

The fourth proportional to 151,683.11, 209,314.51 and 83,686.76 is: 115,483.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,683.11 : 209,314.51 = 83,686.76 : x
  2. Step 2: Convert to fraction form
    151,683.11/209,314.51 = 83,686.76/x
  3. Step 3: Cross multiply
    151,683.11x = 209,314.51 × 83,686.76
  4. Step 4: Simplify right side
    151,683.11x = 17,516,851,907.10
  5. Step 5: Solve for x
    x = 17,516,851,907.10/151,683.11
  6. Step 6: Final answer
    x = 115,483.21

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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.