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Finding the Fourth Proportional to 128,927.40, 193,439.70 and 62,426.40

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Solution

The fourth proportional to 128,927.40, 193,439.70 and 62,426.40 is: 93,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,927.40 : 193,439.70 = 62,426.40 : x
  2. Step 2: Convert to fraction form
    128,927.40/193,439.70 = 62,426.40/x
  3. Step 3: Cross multiply
    128,927.40x = 193,439.70 × 62,426.40
  4. Step 4: Simplify right side
    128,927.40x = 12,075,744,088.08
  5. Step 5: Solve for x
    x = 12,075,744,088.08/128,927.40
  6. Step 6: Final answer
    x = 93,663.13

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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.