Home / 115,802.40-159,810.18-64,814.70

Finding the Fourth Proportional to 115,802.40, 159,810.18 and 64,814.70

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Solution

The fourth proportional to 115,802.40, 159,810.18 and 64,814.70 is: 89,445.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,802.40 : 159,810.18 = 64,814.70 : x
  2. Step 2: Convert to fraction form
    115,802.40/159,810.18 = 64,814.70/x
  3. Step 3: Cross multiply
    115,802.40x = 159,810.18 × 64,814.70
  4. Step 4: Simplify right side
    115,802.40x = 10,358,048,873.65
  5. Step 5: Solve for x
    x = 10,358,048,873.65/115,802.40
  6. Step 6: Final answer
    x = 89,445.89

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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.