Home / 153,038.30-229,581.23-78,117.89

Finding the Fourth Proportional to 153,038.30, 229,581.23 and 78,117.89

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Solution

The fourth proportional to 153,038.30, 229,581.23 and 78,117.89 is: 117,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,038.30 : 229,581.23 = 78,117.89 : x
  2. Step 2: Convert to fraction form
    153,038.30/229,581.23 = 78,117.89/x
  3. Step 3: Cross multiply
    153,038.30x = 229,581.23 × 78,117.89
  4. Step 4: Simplify right side
    153,038.30x = 17,934,399,732.71
  5. Step 5: Solve for x
    x = 17,934,399,732.71/153,038.30
  6. Step 6: Final answer
    x = 117,188.97

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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.