Home / 149,547.49-206,368.23-89,116.78

Finding the Fourth Proportional to 149,547.49, 206,368.23 and 89,116.78

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Solution

The fourth proportional to 149,547.49, 206,368.23 and 89,116.78 is: 122,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,547.49 : 206,368.23 = 89,116.78 : x
  2. Step 2: Convert to fraction form
    149,547.49/206,368.23 = 89,116.78/x
  3. Step 3: Cross multiply
    149,547.49x = 206,368.23 × 89,116.78
  4. Step 4: Simplify right side
    149,547.49x = 18,390,872,151.90
  5. Step 5: Solve for x
    x = 18,390,872,151.90/149,547.49
  6. Step 6: Final answer
    x = 122,976.80

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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.