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Finding the Fourth Proportional to 187,303.40, 258,474.76 and 102,420.40

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Solution

The fourth proportional to 187,303.40, 258,474.76 and 102,420.40 is: 141,338.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,303.40 : 258,474.76 = 102,420.40 : x
  2. Step 2: Convert to fraction form
    187,303.40/258,474.76 = 102,420.40/x
  3. Step 3: Cross multiply
    187,303.40x = 258,474.76 × 102,420.40
  4. Step 4: Simplify right side
    187,303.40x = 26,473,088,309.10
  5. Step 5: Solve for x
    x = 26,473,088,309.10/187,303.40
  6. Step 6: Final answer
    x = 141,338.00

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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.