Home / 100,353.18-138,502.54-64,070.14

Finding the Fourth Proportional to 100,353.18, 138,502.54 and 64,070.14

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Solution

The fourth proportional to 100,353.18, 138,502.54 and 64,070.14 is: 88,426.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,353.18 : 138,502.54 = 64,070.14 : x
  2. Step 2: Convert to fraction form
    100,353.18/138,502.54 = 64,070.14/x
  3. Step 3: Cross multiply
    100,353.18x = 138,502.54 × 64,070.14
  4. Step 4: Simplify right side
    100,353.18x = 8,873,877,128.16
  5. Step 5: Solve for x
    x = 8,873,877,128.16/100,353.18
  6. Step 6: Final answer
    x = 88,426.47

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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.