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Finding the Fourth Proportional to 157,103.69, 216,802.08 and 85,483.98

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Solution

The fourth proportional to 157,103.69, 216,802.08 and 85,483.98 is: 117,967.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,103.69 : 216,802.08 = 85,483.98 : x
  2. Step 2: Convert to fraction form
    157,103.69/216,802.08 = 85,483.98/x
  3. Step 3: Cross multiply
    157,103.69x = 216,802.08 × 85,483.98
  4. Step 4: Simplify right side
    157,103.69x = 18,533,104,670.68
  5. Step 5: Solve for x
    x = 18,533,104,670.68/157,103.69
  6. Step 6: Final answer
    x = 117,967.35

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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.