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Finding the Fourth Proportional to 99,875.70, 148,753.80 and 99,392.81

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Solution

The fourth proportional to 99,875.70, 148,753.80 and 99,392.81 is: 148,034.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,875.70 : 148,753.80 = 99,392.81 : x
  2. Step 2: Convert to fraction form
    99,875.70/148,753.80 = 99,392.81/x
  3. Step 3: Cross multiply
    99,875.70x = 148,753.80 × 99,392.81
  4. Step 4: Simplify right side
    99,875.70x = 14,785,057,436.41
  5. Step 5: Solve for x
    x = 14,785,057,436.41/99,875.70
  6. Step 6: Final answer
    x = 148,034.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.