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Finding the Fourth Proportional to 107,172.16, 147,869.68 and 64,133.22

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Solution

The fourth proportional to 107,172.16, 147,869.68 and 64,133.22 is: 88,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,172.16 : 147,869.68 = 64,133.22 : x
  2. Step 2: Convert to fraction form
    107,172.16/147,869.68 = 64,133.22/x
  3. Step 3: Cross multiply
    107,172.16x = 147,869.68 × 64,133.22
  4. Step 4: Simplify right side
    107,172.16x = 9,483,358,718.77
  5. Step 5: Solve for x
    x = 9,483,358,718.77/107,172.16
  6. Step 6: Final answer
    x = 88,487.15

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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.