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Finding the Fourth Proportional to 163,389.60, 245,084.40 and 69,904.80

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Solution

The fourth proportional to 163,389.60, 245,084.40 and 69,904.80 is: 104,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,389.60 : 245,084.40 = 69,904.80 : x
  2. Step 2: Convert to fraction form
    163,389.60/245,084.40 = 69,904.80/x
  3. Step 3: Cross multiply
    163,389.60x = 245,084.40 × 69,904.80
  4. Step 4: Simplify right side
    163,389.60x = 17,132,575,965.12
  5. Step 5: Solve for x
    x = 17,132,575,965.12/163,389.60
  6. Step 6: Final answer
    x = 104,857.20

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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.