Home / 145,946.40-201,405.60-78,878.40

Finding the Fourth Proportional to 145,946.40, 201,405.60 and 78,878.40

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Solution

The fourth proportional to 145,946.40, 201,405.60 and 78,878.40 is: 108,851.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,946.40 : 201,405.60 = 78,878.40 : x
  2. Step 2: Convert to fraction form
    145,946.40/201,405.60 = 78,878.40/x
  3. Step 3: Cross multiply
    145,946.40x = 201,405.60 × 78,878.40
  4. Step 4: Simplify right side
    145,946.40x = 15,886,551,479.04
  5. Step 5: Solve for x
    x = 15,886,551,479.04/145,946.40
  6. Step 6: Final answer
    x = 108,851.96

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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.