Home / 120,240.40-165,878.76-72,465.52

Finding the Fourth Proportional to 120,240.40, 165,878.76 and 72,465.52

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Solution

The fourth proportional to 120,240.40, 165,878.76 and 72,465.52 is: 99,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,240.40 : 165,878.76 = 72,465.52 : x
  2. Step 2: Convert to fraction form
    120,240.40/165,878.76 = 72,465.52/x
  3. Step 3: Cross multiply
    120,240.40x = 165,878.76 × 72,465.52
  4. Step 4: Simplify right side
    120,240.40x = 12,020,490,600.36
  5. Step 5: Solve for x
    x = 12,020,490,600.36/120,240.40
  6. Step 6: Final answer
    x = 99,970.48

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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.