Home / 128,852.04-177,815.47-72,264.63

Finding the Fourth Proportional to 128,852.04, 177,815.47 and 72,264.63

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Solution

The fourth proportional to 128,852.04, 177,815.47 and 72,264.63 is: 99,725.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,852.04 : 177,815.47 = 72,264.63 : x
  2. Step 2: Convert to fraction form
    128,852.04/177,815.47 = 72,264.63/x
  3. Step 3: Cross multiply
    128,852.04x = 177,815.47 × 72,264.63
  4. Step 4: Simplify right side
    128,852.04x = 12,849,769,147.83
  5. Step 5: Solve for x
    x = 12,849,769,147.83/128,852.04
  6. Step 6: Final answer
    x = 99,725.00

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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.