Home / 78,364.95-117,547.56-19,200.80

Finding the Fourth Proportional to 78,364.95, 117,547.56 and 19,200.80

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Solution

The fourth proportional to 78,364.95, 117,547.56 and 19,200.80 is: 28,801.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,364.95 : 117,547.56 = 19,200.80 : x
  2. Step 2: Convert to fraction form
    78,364.95/117,547.56 = 19,200.80/x
  3. Step 3: Cross multiply
    78,364.95x = 117,547.56 × 19,200.80
  4. Step 4: Simplify right side
    78,364.95x = 2,257,006,602.31
  5. Step 5: Solve for x
    x = 2,257,006,602.31/78,364.95
  6. Step 6: Final answer
    x = 28,801.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.