Home / 102,555.81-141,487.56-64,248.69

Finding the Fourth Proportional to 102,555.81, 141,487.56 and 64,248.69

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Solution

The fourth proportional to 102,555.81, 141,487.56 and 64,248.69 is: 88,638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,555.81 : 141,487.56 = 64,248.69 : x
  2. Step 2: Convert to fraction form
    102,555.81/141,487.56 = 64,248.69/x
  3. Step 3: Cross multiply
    102,555.81x = 141,487.56 × 64,248.69
  4. Step 4: Simplify right side
    102,555.81x = 9,090,390,381.30
  5. Step 5: Solve for x
    x = 9,090,390,381.30/102,555.81
  6. Step 6: Final answer
    x = 88,638.47

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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.