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Finding the Fourth Proportional to 101,146.65, 139,503.48 and 64,851.56

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Solution

The fourth proportional to 101,146.65, 139,503.48 and 64,851.56 is: 89,444.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,146.65 : 139,503.48 = 64,851.56 : x
  2. Step 2: Convert to fraction form
    101,146.65/139,503.48 = 64,851.56/x
  3. Step 3: Cross multiply
    101,146.65x = 139,503.48 × 64,851.56
  4. Step 4: Simplify right side
    101,146.65x = 9,047,018,303.43
  5. Step 5: Solve for x
    x = 9,047,018,303.43/101,146.65
  6. Step 6: Final answer
    x = 89,444.57

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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.