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Finding the Fourth Proportional to 126,875.50, 175,009.01 and 81,612.50

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Solution

The fourth proportional to 126,875.50, 175,009.01 and 81,612.50 is: 112,574.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,875.50 : 175,009.01 = 81,612.50 : x
  2. Step 2: Convert to fraction form
    126,875.50/175,009.01 = 81,612.50/x
  3. Step 3: Cross multiply
    126,875.50x = 175,009.01 × 81,612.50
  4. Step 4: Simplify right side
    126,875.50x = 14,282,921,545.52
  5. Step 5: Solve for x
    x = 14,282,921,545.52/126,875.50
  6. Step 6: Final answer
    x = 112,574.31

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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.