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Finding the Fourth Proportional to 134,888.68, 186,117.51 and 78,269.68

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Solution

The fourth proportional to 134,888.68, 186,117.51 and 78,269.68 is: 107,995.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,888.68 : 186,117.51 = 78,269.68 : x
  2. Step 2: Convert to fraction form
    134,888.68/186,117.51 = 78,269.68/x
  3. Step 3: Cross multiply
    134,888.68x = 186,117.51 × 78,269.68
  4. Step 4: Simplify right side
    134,888.68x = 14,567,357,950.10
  5. Step 5: Solve for x
    x = 14,567,357,950.10/134,888.68
  6. Step 6: Final answer
    x = 107,995.41

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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.