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Finding the Fourth Proportional to 161,570.80, 242,210.40 and 105,437.80

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Solution

The fourth proportional to 161,570.80, 242,210.40 and 105,437.80 is: 158,061.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,570.80 : 242,210.40 = 105,437.80 : x
  2. Step 2: Convert to fraction form
    161,570.80/242,210.40 = 105,437.80/x
  3. Step 3: Cross multiply
    161,570.80x = 242,210.40 × 105,437.80
  4. Step 4: Simplify right side
    161,570.80x = 25,538,131,713.12
  5. Step 5: Solve for x
    x = 25,538,131,713.12/161,570.80
  6. Step 6: Final answer
    x = 158,061.55

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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.