Home / 100,030.28-149,878.80-70,385.83

Finding the Fourth Proportional to 100,030.28, 149,878.80 and 70,385.83

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Solution

The fourth proportional to 100,030.28, 149,878.80 and 70,385.83 is: 105,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,030.28 : 149,878.80 = 70,385.83 : x
  2. Step 2: Convert to fraction form
    100,030.28/149,878.80 = 70,385.83/x
  3. Step 3: Cross multiply
    100,030.28x = 149,878.80 × 70,385.83
  4. Step 4: Simplify right side
    100,030.28x = 10,549,343,362.71
  5. Step 5: Solve for x
    x = 10,549,343,362.71/100,030.28
  6. Step 6: Final answer
    x = 105,461.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.