Home / 88,407.20-132,610.80-78,730.40

Finding the Fourth Proportional to 88,407.20, 132,610.80 and 78,730.40

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Solution

The fourth proportional to 88,407.20, 132,610.80 and 78,730.40 is: 118,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,407.20 : 132,610.80 = 78,730.40 : x
  2. Step 2: Convert to fraction form
    88,407.20/132,610.80 = 78,730.40/x
  3. Step 3: Cross multiply
    88,407.20x = 132,610.80 × 78,730.40
  4. Step 4: Simplify right side
    88,407.20x = 10,440,501,328.32
  5. Step 5: Solve for x
    x = 10,440,501,328.32/88,407.20
  6. Step 6: Final answer
    x = 118,095.60

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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.