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Finding the Fourth Proportional to 163,407.40, 245,111.10 and 129,946.30

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Solution

The fourth proportional to 163,407.40, 245,111.10 and 129,946.30 is: 194,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,407.40 : 245,111.10 = 129,946.30 : x
  2. Step 2: Convert to fraction form
    163,407.40/245,111.10 = 129,946.30/x
  3. Step 3: Cross multiply
    163,407.40x = 245,111.10 × 129,946.30
  4. Step 4: Simplify right side
    163,407.40x = 31,851,280,533.93
  5. Step 5: Solve for x
    x = 31,851,280,533.93/163,407.40
  6. Step 6: Final answer
    x = 194,919.45

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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.